Don't worry, we already developed a Coin2 back-end (PHP) which will work with any games.
Have you any docs? Is it a web service or PHP classes for whichever server needs them?
Apologize for the lack of knowledge but does this include app based games u can download from say a google play store?
Honestly I don't think so because the game source code should be modifiable to include Coin2 payment system.
If a game is released under Open Source licence, we could modify it to fit our needs and include the required code.
If a game developer agree to use Coin2, he could make the programming to add payout function and use the Coin2 back-end.