Better Crystal bindings for SDL.
NOTE: You MUST recompile Crystal without the native SDL bindings, otherwise segfaults will occur. Simply remove the SDL files from a fresh clone of the Crystal source code and compiling should be enough.
test - Recommended minimum for working with SDL in Crystal.
beachball - PyGame inspired sprite demo for a beachball image bouncing against the edges of the window.
breakout - PyGame inspired demo, taken from: Program Arcade Games With Python And Pygame
tetris - PyGame inspired tetris clone.