Rubygame is a cross-platform game and multimedia library for the ruby programming language. It provides flexible high-level ruby classes on top of SDL to make game programming fast and enjoyable.

Some of the features of Rubygame are:

• Image loading in many formats.
• Scaling, rotating, and flipping images.
• TrueType Font and SFont (bitmap font) support.
• Keyboard, mouse, and joystick input.
• Flexible sprite library for game objects.
• OpenGL integration for 3D hardware-accelerated graphics.
• Sound mixing and playback.

License: free

Additional System Requirements:

• ruby 1.8
• SDL 1.2.7
• SDL_gfx 2.0.10 (optional)
• SDL_image 1.2.3 (optional)
• SDL_mixer 1.2.7 (optional)
• SDL_ttf 2.0.6 (optional)