Bitcoin Forum

Do anyone play on casino's which have vault feature (a wallet type feature where we store the crypto which we don't want to play with)
it will be easy to know asking from real users who have account on that casino. it will be difficult and very time consuming to ask about vault feature on every casino's support chat.
we cannot see the vault feature by just visiting the site, because vault feature is visible if i have account on that casino and i am logged in on it.
here are some i know bcgame, stake, bitsler, wolfbet.
please reply if you know a casino

You may have a look on bitsler which has good reputation on gambling especially at casino. And i think it will fulfil your requirement as it has vault option and i have used the vault several time. Though they have few issues on sportsbook but they have no issues on the casono section. So, undoubtedly you can use it.

Do you mean in the form of a bankroll feature we have a few casinos that offer such features and from my research the casino that was popular with such a feature is Bustadice,  I don't know if they still maintained the same level of rewards allocation as there we're back then but then also we may still have a few others casino that offers backroll investment where those that store some amount of funds on the bankroll take part in the revenue sharing of the casino on the long run.

But your mentioning vault also makes me more confused about what you really mean and hope that my above statement answers your questions.

The only reputable casino I know that has this feature is stake.com. They also use the vault feature for VIP levels. For example, if you reach Bronze VIP, they will send the bonus to your vault wallet. I can't remember exactly, but if you win the $50,000 weekly raffle on Eddie's stream every Saturday, once you win they will send it to your vault Or I think it's just like the weekly and monthly bonus, where they will simply send a link to your email.

I think that all casinos I use dont have this vault feature, but why would you even use this for?
If you dont want to play with part of your coins just withdraw them to your own non-custodial wallet and you will be much safer.
No vault will protect your coins from hacker attacks, and casinos shutting down without announcement, like it happened with betnomi few months ago.
If you have problem with spending lot of money than you can extra passphrase and additional seed phrase to make it harder to access and send coins quikcly.

I don’t think I have noticed something like this in any casino that I have used.

I do have a question; does the vault have an amount that you have to accumulate to before you can withdraw the money? Or they have a certain rank that you have to achieve beige you’ll be able to unlock the vault and withdraw if “yes” then it’s no different from what other casinos are doing when you’re given bonuses. Since you’ll have to accumulate a certain amount from the bonus that you have received before you can withdraw them to your non-custodial wallet.

The Vault feature is mainly for setting betting limits, imho. It helps you avoid going all-in with more than you are willing to lose when playing games like roulette or poker. I have used casinos with this feature, but I cannot remember which ones or if they are still around.


That is solid advice! But it brings you additional hassle, and you have to be extra careful not to make a mistake when withdrawing and depositing. The Vault feature is more convenient, especially if you set budget limits on a daily basis.


That is true. The Vault feature cannot protect your money from scam casinos. If you do not trust the platform, you should not deposit or play there.

I think Duelbits also have similar feature where players bonuses and rewards that are internally generated are credit to the vault accounts and from where the players can stake any games using the bonus balance in the vault and but what i don't know is if the rewards credited to the vaults are subjects to some form of requirements before it withdrawals.
Or players are allowed to withdraw at will from the account, i haven't taken part in such system before to know how it works, but i will ve glad if i can get some answers on that

Let's be honest.

A vault system is being used for stored-fund, but in casino most of people will never leave money in the casino with a really long period. If you asking these feature from a user perspective, these feature being used for to stored some of your money in-case you are in winning situation. Example, you sent 80/90% of your winning to the vault and want to keep gambling you keep the 10% on your main balance. Once is gone, we are gonna to withdraw the money from the vault.

LeoVegas casino have a limit feature reminder, in-case you already playing like 2 hour/winning certainly amout money the warning reminders pops up. Actually, no need to use vault system for these case.

Their is no need of asking since you already have a clear understanding of the things you are asking, for further investigation since you have already listed some of them that have the features you needed I will like you to make more research and investigation concerning what you asked and continue the process, without your preamble list I won't have known any, but I believe that with your research you will make a good choice despite that people you know will also give you more hit or enlighten you more to understand more in bitcoins

I have seen such feature just in few casino. Most of the times I have used with stake.
They use vault also as a place to store coins received from rains or other promo like rakeback (before reaching level gold).  It's something strange that no all casino are using it as function, it's a really useful feature.

This is a TERRIBLE idea!

Please guys.

Not your keys, not your coins

Here's a quick list of some the things that could go wrong if you use a "vault" feature on a casino:
- The casino could insecurely store your coins and they could be hacked.
- The casino could exit and you'd be left with nothing.
- You could put too much in the vault and the casino might seize the opportunity to KYC-scam you (ask for kyc and no matter what you provide, keep your crypto anyway) (this happens all the time, including on Stake and popular casijos)
- Your system could be compromised and the hacker could take from the vault if he captures your login (this has happened before in a phishing case involving Stake, who allowed a hacker to withdraw over 50k from someone's account).

Just keep your coins in a non custodial wallet. This is bitcoin common sense and if you aren't following common sense, you're exposing yourself to risk that you don't have to expose yourself to.

To be fair, OP just want to know what casino offer that option, he is not talking about using that feature as a replacement for a proper non custodial wallet.

He may just want to know where he can gamble while keeping his earnings to one side, so he can a better control over his gambling budget.
It just takes a little bit of common sense and knowledge on how custodial wallets work, in order to realize the risks associated to them.

So, if anyone just feels like using the vault feature to keep control over their expenses on a casino, then there is nothing wrong with using it.

You asked for reputable casinos and you yourself mentioned those only. I have been playing at Stake and Bitsler for many users, Bitsler used the vault or bank in recent few years, but stake had these feature since it’s launch. I have played in both the site, so I can recommend you the both. The main idea behind this banks or vault is to not bust the whole balance at once. You can keep a certain amount in vault and can gamble with the rest amount with high risk. This is a beneficial feature for the gamblers who used to bet all funds at once.

I know some casinos that have vault features. Apart from the casinos you have mentioned, there are a few more; Wintomato.com, Windice.io, Starbets.io, casinoroyale.bet, Paradice.in, and jacksclub.io. These are the casinos I know which have the vault features. There might be some others as well. I have accounts in many of them but I don't remember right now.
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Now I am curious why do you need to know about the vault system? Are you compiling any list or do you plan to gamble on those platform which has this feature? I highly suggest not to store your crypto on casino accounts.

I don't know what wallet system the casino uses. I think it would take too long if I had to ask that question every time I gambled. So, I only play on reputable sites. I think the site you mentioned can be trusted, even though I haven't played on all the sites you mentioned, regarding bc-games I have played there several times and haven't had any problems.

Besides, in my opinion, whether a casino uses a vault feature or not doesn't really matter, because if I'm unlucky, the result will still be the same  :D

I don't really understand this feature. but is it really useful to limit us from losing too much in the game?
but you mentioned it's a feature for saving money that we don't want to play with. Does that mean you lock your money in the casino?
I also play at some casinos, but I'm not aware of those features. I have less experience in this matter. because I only deposit money into casinos that I am ready to gamble with. even if I don't get my luck.

This is basically just a feature to keep some of your money into the vault so you will play with the remaining balance in your gambling account only until you withdraw what you save in the vault back into your main balance. In short, it is like a bank account. In the past many players create a 2nd account as their bank account and some sites started to create vault feature to fulfil what is needed by player. It was really useful when most gamblers play with bitcoin and when the transaction fee was so expensive. Instead of withdrawing their bitcoin and deposit it back to the casino which will cost them more money for the fee , they preferred to use their bank account (secondary account) by tipping feature and then they moved to the vault feature for the same reason. It can be said as "soft-lock" of your money so you will not lose all your balance because you store/save some of it in the vault.

Yeah, I just checked it on stake and they've got that feature. I guess there's no need to go with other casinos since all of those that you've mentioned are very popular and known in the forum.

I haven't used the vault features but it's a good idea if you really think that it's a solution for your gambling needs. Like you let some few hundreds on that vault because you don't want to spend it this day.

And by the time you comes back and you have nothing left and just out of a sudden remembers that you still got some money left on the vault, you can just take it back. Just go with stake I guess for that part.

In my opinion .... having a Vault is not for security reasons. Take the Stake.com feature for example.... if you fall for some Phishing attack and you account password are compromised, then you Vault are also compromised... because it asks for the same password to move the funds. (The 2FA are protecting your balance.... not the Vault)

The Vault function are valuable, if you use automatic betting... and you do not want to lose your whole balance on a typo or a wrong script (bot) entry.  (Let's say you used some bot and something goes wrong and it eats your whole balance)

These sites should actually give another password for the Vault to make it more secure.  ;)

Correct Stake.com has a vault feature and actually, it will be introduced once you go at your first VIP rank which is bronze. They will put your bonus there from all your wager and deposit bonuses so you will know about it when you hit the first level. I don't know if Sportsbet.io has the same feature too.

But to be honest OP, this ain't a good idea. I think that the vault is made for a different purpose and not to store your coins for a long time. That ain't a wallet but a gambling site and I think it's there for gamblers who just want to keep their money our of their eyes especially if they know for themselves that they are aggressive gamblers when they see their balance at full amount. The vault will somehow keep them under control to not wage everything in just one bet.

Almost all reputable casinos have a vault feature including the one in my signature which is one of the biggest casinos here.The problem though is that I don't understand what the vault is needed for knowing the nature of gamblers,at least most of them would love to play all the money they have available to them including me so I find this feature not really needed for most of us but since most reputable casinos have it implemented it means that most probably there are some people who love this feature.

That's not the main point here. When you deposit your coins into a centralized service, any centralized service, you essentially give up control of them to that third party. The "Vault" feature is there just to set aside a portion of your main balance and limit your amount available for gambling. It isn't meant for long-term safekeeping of your money.

This still isn't a good enough reason to choose a "vault" over a non custodial wallet...no matter if it is short, medium or long term storage. Better practice would be to keep whatever you are not gambling with for the session off-site. Otherwise makes no sense, and increases risk.

A literal "vault" is also traditionally used for safekeeping, storing anything in a casino (balance/vault) is not as safe as a vault, nor is it safekeeping. If the intention is to "set aside" and for some reason a non custodial wallet is not an option or not preferable (both unlikely when conducting in good practice) then another word is needed...vault is not accurate.

"Stash", "Storage", or any word that does not imply that the solution is any safer than your balance is more applicable. Vault implies security, which is completely untrue from the way you've described the intended functionality.


It would take less self control to move from the "vault" to your balance, in comparison to just keeping excess coins in your wallet...unless there is a time lock capability, which is not mentioned. There's no added benefit to a vault in comparison to just using a non custodial wallet and keeping non-wagered balances there.

If I'm not mistaken, duelbit has a vault feature to store money you don't want to use for gambling other than the names of the casinos you mentioned. But you should immediately send the coins to your wallet to avoid unwanted incidents. Plus, by sending them to your personal wallet, you can keep an eye on your coins so that if something happens to the casino, you won't panic. But if you think storing your coins in a vault is a good idea, you can try it. But we know that it's not your keys, not your coins. So be careful.

I don't see much use in playing with a vault where you save and only use what the casino says? I am not saying anything that the casino has a vault that is very secure, or that it is planned with how much is going to be played each day and thus some type of challenge or some fixed goal can be established, or I would use it for that and to control my balance , and so it is deposited so you can't play until the vault planning is removed, this should be weekly so we can see if this system works, the vault thing bothers me, I don't know that idea sounds quite familiar to me, especially for Avoid addiction, it is a good initiative, you just have to look beyond it.

I lost my mind.

So far I know 2FA is protecting all, that's means your login is still asked for 2FA. 2FA on Login & Vault are work the same things, that's mean if you say (If your password compromised) the person who tried to hack you need required 2FA as well for login.

2FA once is active will protect all
- Withdraw
- Disable 2FA
- Vault
- Login

Dielbits is one of the casino I knew that offers this feature aside from the casino that you mention already. Also Blackjack.fun has this kind of similar feature with their Ninja Investor which you can store your coins through staking that isolate your money to the rest of your balance. The only difference is that your balance is being invest on bankroll instead of just isolating it on a vault.

I preferred the staking feature on the website compared to the vault that doesn’t have time lock feature or other security that you literally withdraw your balance anytime. Staking is much better because you can get safe feature of fund isolation and earn passive profit at the same time.

If I'm not mistaken there is also one casino that implemented this kind of vault, not sure if it has the same idea as yours, but I totally forget the name of the casino, or how successful it was before or it the casino still exists today.

And just like what others say, duelbits is one casino that has this kind of features.

I'll try to find the casino's though that I have mentioned, maybe I could refresh my memory.

I was digging around the forum to jog my memory about a casino I used before. I distinctly recall it had this cool vault thing. And guess what? I just stumbled upon your cool thread where you have listed casinos with that exact functionality. Thanks for making my search easier!  :D

https://bitcointalk.org/index.php?topic=5460971.0

Anyway, you can add Primedice.com (sister site of Stake.com) to your list: https://bitcointalk.org/index.php?topic=208986.0
Also, I see that Duelbits.com has already been mentioned here so should add that as well. https://bitcointalk.org/index.php?topic=5279042.0
Blackjack.fun has a vault but as a form of investment, so you can even earn some interest on your amount: https://bitcointalk.org/index.php?topic=5106215.0
StarBets.io also added a vault feature in their update log, but I cannot vouch for its reputation: https://bitcointalk.org/index.php?topic=5389679.msg59525123#msg59525123
Tower.bet also added a vault feature to their platform last year: https://bitcointalk.org/index.php?topic=5220588.msg60298452#msg60298452
500.casino as well: https://bitcointalk.org/index.php?topic=5296113.0

That is all I have found so far. Hope this helps!

A password which is supposed to be different from the one we are supposed to log in on the main account.
or even better, for those who manage big quantities of crypto, there should be an option for setting an additional 2 Factor Authentication method for the vault, perhaps for even better results, that method of authentication should be done through a physical key.

Though, I also agree that the main purpose of the vault is suppose to help with money management when gamblers engage with automated gambling.

A vault is nothing extraordinary, it's just like a separate wallet where you can keep the coins or money that you don't want to withdraw and will use for gambling later. Let's suppose you have won $5,000, and you want to withdraw $3,000 and keep the remaining balance in there so that you can play it later, you can simply put them in your vault. If someone thinks that a vault can make them become a responsible gambler, that is absolutely not going to happen.

A vault most of the time will be protected with a password or a pin, so the actual advantage of keeping your funds in the vault is that if a scammer or a hacker breaks into your account to steal your funds, they won't see them since they are in the vault and they won't be able to open the vault without its password.

In my opinion, the safe feature is a very good feature as in the case of a person like me who uses stake.com to place sports bets, when I profit I can transfer the profit balance to the safe and in this way I would leave the balance intended for betting and the balance in the safe intended for withdrawals and this would make it easier for me to manage my bankroll. In my opinion this is the only good way for me to use this vault feature. now it is important that people realize that the safe is not a wallet in which people will make deposits to make hodl, this has to be very clear that people

because people who confuse the functions of casinos, exchanges and wallets. casinos and exchanges are not places to store currencies for the purpose of long-term hodl, in fact even if they were to be held for the short term they would not be appropriate places, casinos are places to play games of chance, any money we deposit in the casino it should be treated as lost money, that is my understanding, whereas when we put money on the exchange we are putting the money to do day trading where there is a high risk of losing money every day

so when we put the money in the wallet where the person has control of the private keys, the person can hodl for a long time, the person's money will be safe, I think that each person needs to understand this and know the purpose of each thing. The safe feature is a good feature as I said, but it is not a wallet to hodl for years. In my case, I only use it when I want to separate my profit from the money I make bets, to make my bankroll management easier.

But in such way, the platform has the authority over your funds and this guess, alike with storing some of your wealth on exchanges which is not an advisable thing to do given that there are risks of losing money in particular with platforms turning out to be a scam or other people getting an access to your account for some reasons. So I agree with others who are thinking that if you're not using an amount in your account it would be better to jist withdraw it and deposit once you are needing it. We should never be too lazy to make our funds be vulnerable to risks 'coz being in this industry have already put us to such. So atleast, in every action we will be making that should lessen our risk exposure.

This feature I guess is rare. Most of the time players are just letting their funds unattended to their gambling accounts which is neither advisable as for me.

There may be an actual benefit, if the coin a gambler is expensive to move, due to transaction fees and if the user knows they are going to gamble in a consistent way, then it would be better for them just to send a big transaction and move most of it to the vault, then use a smaller amount to gamble as desired during that session.

For example, a single BTC transaction can be as high as a few dollars, so each one of them accumulates. Don't they ?   :P

You are right, once we have activated 2FA in our account then it is required to put 2FA code in order to withdraw our coin from the vault in Stake. So in case our password is compromised, the money in the vault cant be touched by the hacker. This case remind me about someone who claimed that his Stake's account is hacked through phishing link sometime ago, 2FA is active in his account and the hacker cant withdraw it but the hacker use the balance to bet and lost it all. Something different may happen if the user store some of his balance into the vault, as the hacker will not be able to use it unless the hacker also have an access to the 2FA.  :)

Yes, the user must know the risk before using that vault online. Actually, there are many effective ways to control over their expenses in a casino besides using the vault, such as financial management. So that the money remains in the casino balance without moving it to another safe box. That is target plan how many funds you have to play today, so if the limit is exceeded you have to stop it and close the site until tomorrow, just simple like that. but if you are not used to it and you are too ambitious, better use that vault.

I only know Duelbit and Stake have it because I've seen it before so I know it's there.
But I have never tried the vault feature in any casino because in my opinion, it is not necessary, especially since it is our money.
But if you think using the vault feature in trusted casinos will prevent you from crossing the limit every time you bet, that's fine as long as you strictly adhere to your limits.
But you must remember that you will hand over a certain amount of money to the casino, so you have to accept all the risks.
I think it would be better if you controlled the use of the money yourself rather than using the vault feature so that you just send a certain amount of money to gamble and don't need to keep a lot of money in your gambling account.

Stake.com has this feature and maybe some people use this feature when they want to use a certain amount of budget but only want to use part of it and the rest is stored in the vault so that when the player wants to bet again they don't need to make another deposit, just withdraw from the vault. and don't wait a long time.
Maybe some people misunderstand this feature, thinking that if they save funds on gambling sites, even in the vault, it will be very dangerous. When something bad happens, such as being phished or hacked, the funds in the vault will be lost, but that's not how it works as far as I know.
For example, an experienced gambler plans to use $100 to bet but at that time only wants to use $50 and keep the rest in a vault to bet again when really needed so there is nothing dangerous here because it saves a small amount that can be lost if a problem occurs.
But if it is used to store large funds, it would be better not to do this because online platforms are vulnerable to hacking.

Thanks for bringing up this interesting discussion OP. Up till now, I never knew that casinos have vault features where store your crypto. I think I can connect the dots now with why a user here asked some days ago if it makes any sense to save your money in an online casino. I guess the user would have gotten better answers if he had explained the vault features in some online casino.

As for me, in the casinos I play, I haven't seen such feature. I would check out the casinos with the vault features that have been mentioned in this thread.

That is the reason why he is asking because he only know a few. Even though Bitsler is a little late to implement the feature, I think Bitsler is still a trusted casino to keep our money in their vaults but we shouldn't store it there for a long time because they can get hacked or what if they decide to scam their users later on?

I'm not judging them but I'm only saying the possibilities as there are so many companies who are also trusted for a long time but later on turned bad. Maybe for you, the purpose of those vaults are like that but for me, I can still be able to gamble all the money inside my vault so I think they are useless unless only if they have a lock-in period.

Don't make your problem too technical and complicated.

Vault is just another good feature but the question here is, if you really don't want to play your crypto anymore, why transfer it to the vault instead to your own wallet? What if you plan on playing again on your crypto, the vault is just one step away from unlocking making your reason now inappropriate.

The main subject here is not about reputable casinos but since you mentioned your reason why you are looking for that, the best approach would be withdrawing your crypto directly to your wallet and not with the vault where it's like you are storing your coins in the third-party platform.

I know only Stake.com has the vault feature but I'm not really using it since what for?

It's better to have that feature for those who want to store their crypto in the meantime and don't want to make another deposit just in case they want to play again. It might be safe but for me, instead of vault, I will cashout my profit directly to my wallet. It's not that I don't trust the platform but shit happened and I don't to store coins in a centralized platform.

As the famous crypto quote says, "not your keys, not your coins."

The vault is a feature that can stock funds by user and it can be used when the user wants. It is the same as withdrawal to his any other account whether exchanges or somewhere else. The difference is to withdraw it will ask charge and it will take time both for deposit as well as withdrawal. But Vault is an instant service and also it does not take any fees.

Oh great mate I am grateful for taking the time to explain to me in more clear terms of what a vault is and what services this feature renders to gamblers,  this explanation helped to redirect my thought on this topic and now I get a better understanding.

But my other question is that,  will casinos be comfortable implementing a feature that takes away fee charges from the casino,  your answer not be so different from mine since we all know why casinos are out here to operate and what their target is in terms of revenue generation so the bottom line is that,  due we sincerely have reputable casinos that have such features in place.

Great to hear that the explanation helped you a little bit which made me happy. Anyway, the vault is free to use and it can't help us anything because while we will lose we must use the funds from the vault. But if the fund is on out of the side then we might not use the fund which may prevent us from becoming more loser.

Ok thanks mate form this further explanation,  you have indeed been helpful having such info helps a whole lot,  since it serves as a guide to us if and when confronted in such a situation and have to make decisions on how we want the vault funds to be used,  because sometime it helpful to have such setting that can help us cut the lose along the line.

Because sometimes,  we may be out of control of the whole situation which may affect us greatly mostly when we have to check as far as losses are concern.

On bitsler i had used the vault service ans it worked ausome. It can help to not making large amount by mistake as we can separte the fund. And it not charge us and ir is instant service. I think those whwo are gambler can enjoy the feature of it. There is nothing loss for the feature

You can always use other casinos here, just like what you mentioned. I believe most of the reputable casinos these days are the same and have no issue at all.
As others said, you can add Duelbits. Duelbits is what I am using right now but sometimes Stake also.
Just be careful using vault because sometimes it will affect some of your automation like on some auto bets like you forgot that you transferred some of your funds in your vault or vice versa.

Stake is the only casino that I am aware of having this  feature, but I am sure there are bunch of other casinos that has this feature available too.


Agree. It serves as another layer of security in case that the account was compromised. Perhaps adding a PIN, password, or/and another 2FA Authenticator will suffice.

I have never used the vault feature and I do not understand what is the purpose of the vault in a gambling site ? The best way is to keep the funds in your personal wallet and transfer only the funds to which you think you are going to gamble. If that fund has exhausted, then you may deposit more and play more.

Depositing a large amount of money in a gambling site and keeping a portion of it in a vault, to use money from that vault from time to time is a risky thing, as we are never in control of the funds in case the site gets compromised or scammed. In both cases, the whole funds stored in the vault will be seized/gone forever.

I have never used the vault feature, but I think the vault feature helps gamblers not to use all their money for gambling, and they can keep their money in their account while they gamble with the budget they have set. It also limits the use of funds that are too large for gambling while they have other amounts of money they save and cannot use for a certain period.

Using the feature helps gamblers to lose more money and not gamble more than they can afford. They need to be self-disciplined in using their money to gamble to reduce the amount of money.

The gambler can just release the money from the vault and they can lose all of their money in short time :D

It's different if the vault has some locking time e.g. a week, a month etc, so there's no way for the gambler can transfer the money to the main wallet. I think there's no casino have such feature.

Am yet to come across any yet, i don't see a reason why they should allow for that when you're expected to use your money to gamble on their wallet, it's better not to deposit any amount one wouldn't want to use for gambling on the casino wallet, instead, get a non custodial wallet and keep your fund there safely, casinos creates wallet for you to be used for gambling purpose, but you may decide not to gamble with the money as the fund remains on their website.

So you are not happy with it? I think you should because it shows that they also care about the gamblers. If you are a true gambler, you might come across with it already and you will know why such feature is needed. For the true gamblers, bankroll management is important. It's the same as budgeting money that we always do on the real world.

Saving is a part of it, and with the help of a casino vault, we can save some portion of our bankroll there or our winnings for later use. A casino can offer promotions like a deposit bonus and the higher the deposit amount the more bonus we can enjoy. This is why some are forced to deposit a little higher.

I don't remember any casino which which encouraged their users to use their account for storing purpose and vault represent the entire cold storage if I am not wrong so it can be considered an individual gambling account cause its just a database with number reflected according to the balance on the wallet not really the account is used as cold storage in any means.

Casinos discourage users to use casino from storing cryptos by enforcing wagering requirements for withdrawal so once someone deposits x sum in a casino they can't request x to be withdrawn unless they involve the funds with any wagering at least 1x.

Using a casino in such a way seems like a bad idea and I doubt that even casinos themselves want for this to happen, as they do not want a bunch of coins being stored with them without moving or doing anything, what they want is for people to gamble that money and storing it that way goes against their interests, besides it does not make a lot of sense when it comes to their clients either, as if they want to store their coins safely, why they do not just buy a hardware wallet and be done with it?

vault feature is to protect the bankroll and transaction fee. means i deposited $100 then I will keep $80 in my vault that casino provide, because i will deposit $20 three times the i will need to pay 5x fee to transfer 20-20 five times. and this is not bad for casinos, they add this feature in their casino so the users deposit more money then they usually play with and lose their emotional control, and wager or bust all money along with bankroll and the money stored in their vault. so it is good for casino if the player is unable to control when he lost those $20, he will deposit the remaining $80 in vault and lose it all in last.

So you are talking about wallet, since vault is generally used to term cold storage, and in casinos, there is no such term in practice. Of course, you can deposit 5x the amount that you wanted to deposit but the security of the funds is the same as of funds deposited to exchange wallet or generally in hot wallet.

But the wagering requirements are another catch with casino, you deposit $100 and only want to gamble with $20 and decides to withdraw the remaining $80 then most casinos won't allow it due to the wagering requirements.

Yeah, Vault is just another wallet isolated from the bankroll of the user. I believe casino use the term vault since gambler use it to protect their money aside from bankroll so that they can limit their losses on the money within the bankroll balance. 
 
Vault is really helpful for those gambler that has the tendency to immediately all-in whenever they encounter a heated game. I understand also his explanation about the since user can really save fee for depositing all money on vault then just play part of it. The wagering requirements doesn’t matter if the total money is already allocated to gambling.

If there is a locking facility for a week or a month, it will be better so that we will not freely use the money in our balance, and it will be a good way to avoid excessive use of money. But if it is a gambler who often gambles, they can deposit other money just to gamble and let the money in the vault remain there. The important thing is that they can still deposit other money and continue gambling. If so, it would be of no use at all because we would still be depositing other money to continue gambling.

Why deposit money on a casino when you aren't ready to play with it? That's not good, so if I recommend any casino with vault features for you now you will store your crypto assets on such storage? Or the money you win from the casino? It's like entrusting your wins back into the hands of the people you won the money from, I don't like the sound of it.

Once you win some amount from any online casino you are to withdraw the fund straight away, this will make you really have the money in hand and it will also make you not likely gamble with the money again, you are simply lowering your chances of getting greedy and using that amount to try your luck again.

I know few casinos that use these features but as a responsible gambler I don't think I will ever use such feature unless there is something I am truly missing, maybe extra winning advantage or something, so tell me, is there something I am missing for not using vaults on a gambling platform? I doubt it.

The user may not be trying to say that the user will just deposit and will not play. If the user won't play then there is no benefit for depositing on the site. It can be used for various purposes but it may used instead of withdrawing funds or it might safe funds from betting large amount by mistake.

This is the main reason why vault was introduced. Some gambler usually becomes greedy on their bet when adrenaline rush kicks in that sometimes makes them bet carelessly and lose all even with huge bankroll. Vault was introduced so that gambler can make part of their bankroll partially inaccessible to avoid betting error.

Also some vault offer different layer of protection which gives extra protection for user funds once they want to left the funds on casino account to save time and fee when they want to play again.