That is roulette:
http://satoshi.gratis The easiest way to win is:
Rolling every 1,5 minute for free! We have just one bet. When you play only red/black you have almost 50% chance to win 200sat. Playing only red - in 60 minutes (1h) you can win around 4000 sat. (60min/1,5min=40 rollsx200sat=8000satx50%=around4000sat - "around" because there is "0"
and gives nothing)
Withdraw min 6000sat, but payments are sent when total wins reach 100,000 satoshi - thats about all players so atm almost straight away
Ofcourse everyone can have fun and bet on everything what he want - thats normal roulette
Prices are different.. for one number they pay 3600 sat
One from the best faucets atm in my opinion, and for gamblers a bit of fun for free
Good luck!