Game development

Are there any good libraries for rapid game development?

It needs to be cross-platform, as I want to develop on GNU/Linux, but need it running on Windows as well.

>>14
If a game runs on Linux in addition to Windows, the sales boost is larger than you'd expect from looking at pure market share. That's because Linux has so few games that even no-name garage coders can get a nice amount of publicity in the Linux press.