[ETH] MATCHING ETHERS - Gambling Game BET UPSIDE OR FLIPPED

[whysos3rious]

Hello folks,

Let me introduce a new Ethereum game, I just launched with a full real-time website :

MATCHING ETHERS
www.matching-ethers.com

Ether Game Mode : (play for 1 ETH)
http://etherscan.io/address/0x31e13882c45c1023d9b16c3794c1a780bb6cb88d

Finney Game Mode : (play for 0.1 ETH)
http://etherscan.io/address/0x2c2e3baa2191cf325a28a01ff42340f2ae677572

It's a strategy and luck based game derived from the old (game-theory) classic Matching Pennies.
There are 2 game modes, each with its own contract, you can play for 0.1 ETH and for 1ETH.

To play Matching Ethers, when you send your bet, you also have to choose if you want your coin to be upside or flipped.

The game is round based (average size of 18 for now), and depending on when you enter the round, you will be assigned  to one of 2 teams : the matchers and the contrarians.

At the (random) end of the round, each matcher will be (randomly) paired with a contrarian:
If both bets are on the same side, the matcher wins.
If the sides of the bets are different, the contrarian wins.

Now the thing is that the latter you enter the round the more information you have and have increased chance to win. To counter this, the game implements an information cost (deduced from winner payout) that increases with the order of entry in the round. First 2 players in round have 0% info cost, Player 3 and 4 will have a 0.5% info cost, Player 4 and 5 will have a 1% info cost ... This also serves as a small house fee (~1% on average) (to pay for domain/server/time).

You can play several times per round, so don't hesitate to try out some elaborate strategies !

How to play ?
Directly :
- send exactly the value of the bet to place it upside.
- or send (a bit) more to flip your coin ! (any excess is refunded immediatly)
Via mist :
Import the contract (using the ABI provided in the links below) and use the play function.

Please don't hesitate to give me your feedback on the game and possible improvements.
I have made the contract in a way that I can easily adjust the parameters after each round to improve the game experience depending on the community feedback. We can adjust the min and max size of the rounds, the value of the bet, the information cost ...

Have fun and Good Luck !

WhySoS3rious

Ether Game Mode : (play for 1 ETH)
http://etherscan.io/address/0x31e13882c45c1023d9b16c3794c1a780bb6cb88d

Finney Game Mode : (play for 0.1 ETH)
http://etherscan.io/address/0x2c2e3baa2191cf325a28a01ff42340f2ae677572

Ps: The website takes rougly 15 secs to load, it's on a low cost server (~0.5 ETH per month at actual price), I'll update the server if the game is successful

[sydhelly]

Finally a real game that's not a ponzi !

I reviewed the code, seems legit to me.

Really like the website also, I bet in the 0.1 ETH play mode.

We need more players, this will be fun.

[whysos3rious]

First Round finished, Congratulations to the first winners.

Please don't hesitate to give feedback on the game, I hope you like it !

[Disruptor]

Nice game, I'm in ! 

[Kbitns]

Nice web site nice game have fun.

thanks

[whysos3rious]

Nice web site nice game have fun.

thanks

thanks ! Glad you like it !

The more player we have the funniers this game will be.

Remember you can play several times per round take it into account in your strategies !

Also the website updates in real time, so if there is any new player, it will refresh

edit : 8 more players to end the second round of 0.1 ETH game mode.

[sydhelly]

Nice ascii art in the contract code btw

[whysos3rious]

Thanks for the support, Glad you like the game

We had a first succesful round on both contracts.

Second rounds are in action right now.
10 players are in the finney mode
3 players in the ether mode !

 

[whysos3rious]

The website was down for a small upgrade tonight.

It's back up and running.

You can now check your player history.

Regarding the game, we still need more players for things to be really interesting.

Do you want me to lower the round size so it goes faster ?
currently the round size is between 16 and 20 players.

we could make it 8 to 12 for instance.

What do you think ?

[whysos3rious]

I have started a pool on the forum to know what you think about the settings of the game, please give me your feedback there or here.

Given the first few results, I decided to refund the current round and lower the size of the rounds for the 1ETH game mode.
The round of the 1 ETH game mode are now from 6 to 10 players, so it will be much quicker.

The finney mode remains unchanged for now and the second round is almost over !
It may end in 2 players min or 6 max !

[whysos3rious]

Given the preliminary results of the pool, I have decided to try smaller rounds from now on.

A round just finished on the finney mode, winners have been paid, so I took the opportunity to change the settings for the next round.

Now both modes have an average round size of 8 players !
Also the fees have been haveld on the finney mode.
It's now only 0.25% information cost.

Have fun and let me know what you think about the changes

[DustBluster]

Great job on the website for this; that interface is stellar.  And the game itself is quite intriguing. 

[whysos3rious]

Great job on the website for this; that interface is stellar.  And the game itself is quite intriguing. 

Happy you like the website, I had fun doing it

Regarding the game, I think things are better now with the smaller rounds, we have already 4 players in the new round of finney mode

[whysos3rious]

Congrats to the winners of round 3

Round 4 is already live with 2 players inside, nice.
I think it's really better with smaller rounds, thanks for the feedback guys.

[sydhelly]

Wow it's active tonight on the game

Any player on this forum ?
I'm Jessie on the game

[whysos3rious]

Wow it's active tonight on the game

Yes indeed ! We reached 100 player !
Thanks to the pioneers supporting this game : Shinysquirrels, RacheBartmoss, Jessie, and the other anonymous players

[DustBluster]

Wow it's active tonight on the game

Yes indeed ! We reached 100 player !
Thanks to the pioneers supporting this game : Shinysquirrels, RacheBartmoss, Jessie, and the other anonymous players

I'm "ShinySquirrels".  It looks like out of 10 plays I'm down by about 0.2 ETH.  I'll keep playing, the break-even point is pretty fair, and it's fun

[DustBluster]

I noticed that Mist (Ethereum Wallet) doesn't always calculate the gas requirement correctly when starting a new round (Etherscan shows the failed transaction and no ETH gets lost).  Getting it to work requires increasing the gas limit when sending the transaction.  I increase it by a LOT to be sure it goes through and because the excess will get returned anyway.

[whysos3rious]

Yes you are right, I'm trying to understand this.
Sometimes the transaction that should resolve the round is refused for "not enough gas". What's strange is that when it is retried, the next transaction succeeds with a lower fee overall.

ex :

success :


0x40c7503ea5762ef054cb68c06e40e2c03a26855152d897ff575f00a169b4bf27   1491538   1 hr 24 mins ago   0x627fbcc6d0590d2186c44df4cc178f2793210a10   [Receive]    0x2c2e3baa2191cf325a28a01ff42340f2ae677572   0.1 Ether   0.00886854 fee

failure

0xc22b069c1093913ccd58705751a90d11504212e044a2f42359ad1fac7473fb99   1491436   1 hr 47 mins ago   0x50abef75362d6e8d78ea3ee9bd028091ed2ae422   [Receive]    0x2c2e3baa2191cf325a28a01ff42340f2ae677572   0.11 Ether   0.0109339 fee

Notice how the succeded one cost less fees in the end !


Anyways it's not a problem and all is working properly.

It seems the game really took off since yesterday, thanks to all the players.

We have a total of 15 rounds ended in the finney mode (with more than 135 players)
The ether mode is seeing some success too

Join us

[Disruptor]

It seems the game really took off since yesterday, thanks to all the players.

Allright ! That was a fun ride we had !

Any players up for some more today ?