In the second tab in Xmodgames, you can find a complete list with all the video games you can modify. You just have to select the game and in a matter of seconds, you can download the patch needed to modify any game. It's that simple.
Xmodgames is an app that basically lets you cheat. Depending on how you use it, it's neither ethical nor fun. But hey, the possibility is there for anyone who wants to use it.