Gemini is a Ruby game engine that separates the game logic from reusable game features. Includes hardware accelerated graphics, physics, standalone distros, and more.

Jemini is a game library designed to allow creation of reusable features. How many times has someone implemented the aiming on a first person shooter, or a minimap on a real time strategy? Jemini comes packaged with lots of behaviors out of the box, with the ability to easily author more. Jemini uses Phys2D and Slick for physics and graphics, with 3D on the roadmap.