Chingu is a library for ruby that wraps up common functions for displaying game sprites, playing music and sound, and handling input from the user. It’s based on Gosu.
It is seriously addicting. By exposing common game object features through ‘traits’, you can quickly get off the ground by mixing in modules into your game objects.
Just to get an idea of how simple it is, check out the examples
folder or give my asteroids-like game a download nfgrebvqf
10 points if you can decipher the title =)