There is one pretty much risk-free to increase your coins.  you know how they say the house always wins.  Well, it does,  So become part of the house.  you don't have to gamble, you just invest your coin in the house.  you can watch players gamble and watch your commissions grow, and your profit grow.  the more people lose, the more your profit grows.  I invested 1 LTC and the next day I had reached 1.02 LTC in about 14 hours. 3 days later, I had 1.032 LTC.  There are times you can watch it grow quickly and take your money back everytime.

Its called Bitvest.  Here is the link

https://bitvest.io?r=94812

Email me if you need screenshots!  Its worth it!  I can't find a stock that pays that well in dividends and growth.

I believe there are many coins that offer POS.  Doge, dash, dav, neo.  ect..  They have a list a blockonomi  Here is the link.    https://blockonomi.com/proof-stake-cryptocurrencies/

Do you mind if I ask what your interest or thoughts are heading with POS coins?

I see why there are so many right now.  The stock market was the same way, especially between the 80's-90's.  I like to think of tokens as a stock in that companies blockchain technology!  Many will fail, but many will succeed!  Do you have any strategy when it comes to buying during a token sale? 

In one of the screenshots, you can see your bets.  And they are in BTC, not Steem.  I've had two issues with this site.  one was my fault and the other seemed like a glitch.  But they fixed everything within a 1/2 hour.  And if you found a bug in their system and report it, they will pay you in BTC.  I am sure this site is legit!  Remember in the end, the house always wins.  And I am sure there are a lot of people trying to hack or scam the site in any way they can.  I couldn't find the game you took a screenshot of.  72 Hours seems reasonable to make sure they are not being scammed or taken advantage of when their system went down.