If you haven’t done so already, check out the Humble Game Maker Bundle, and add a very powerful collection of game maker tools to your personal arsenal for very little money. The fact that you get to support charity at the same time is just a bonus, made even better by the option to add your own favorite charity to the purchase! You can also select the percentage of your money that goes to each of the participants (software creators, charities, and humble bundle), although for myself I tend to let the percentages stay at the default, because it seems like a pretty equitable distribution to me. The part of this deal I found particularly exciting were the modules that allowed you to export your finished game to multiple platforms, including iOS, Android, and Windows, as well as the cross-platform power of HTML5. They give you the source code to a number of excellent games as well, so you can study them and learn exactly how they pulled off major effects and game functions. The games themselves, including the ones you create, run on the Steam game engines alongside such iconic classics as Duke Nukem, and can also be accessed through YoYoGames. There is no downside to this package; consider picking up this powerful collection of game creation packages at this insanely reduced rate, supporting charity in the process, and set yourself up to make the game you always wanted to play.
