a game where the player controls a ribbon to avoid hitting walls.
You have only one control: when you hold the mouse button, the
ribbon goes up. Otherwise the ribbon goes down.
The game uses OpenGL for drawing two-dimensional frames. This is
for portability(for MacOS X) and to offload CPU.
WWW: http://user.ecc.u-tokyo.ac.jp/~g650192/glsfcave/
PR: ports/121847
Submitted by: Dmitry Marakasov <amdmi3 at amdmi3.ru>