Bitcoin online game integration I want to create a game where users can win Bitcoins playing my games I created or perhaps other online games. What APIs do similar applications use to achieve this? how do they host the Bitcoins? do they use their own hosted wallet, bitpay? Bitcoin escrow?
The bitcoin software has it's own API.

Simply put, they run the bitcoind software and use RPC-JSON as the API.

EDIT : changed according to comment. Other implementations of Bitcoin also have their own APIs