I am making the world better by creating a completely free and open source FPS multiplayer game: http://www.moddb.com/games/uebergame
The goal is to create a free open source replacement for the typical modern military shooters out there, like Call of Duty, Battlefield, Counter-Strike etc. In the past I played those a lot, but was always disappointed since they offered not much freedom to mod and play around with them, but this was always the thing I was interested in.
Especially I am also the artist for the project, less the programmer and create the graphics for the game, like textures, 3D-models, levels etc which I release completely free under CC0 license, which I offer on my site to download, since I also create a free open source alternative textures, photos and 3D-models page: http://www.duion.com/art/main
All in all it turned out to be a big, time and money consuming project and some additional funds would help me to pay for hosting, hardware and software costs I currently have and move my project overall to a more professional level away from being just a hobby.
The game is a team project and currently we are two people working on it, me and https://gratipay.com/ahsan . I am mainly the artist and he helps out with the programming and if you don't know who to fund, give it to him, since at the moment to progress further with some planned features, I depend a bit on him.