GlPortal - free

GlPortal is a game featuring teleportation and physics puzzles. You are Ada, a lab assistant on a mission for science. Explore seven exciting levels.
Use teleportation, witt and jetpacks to get to the cake. Visit the website and tell us how you enjoyed the experience.

P.S.: Please don't die, we can't afford a replacement at the moment.

Minimum system requirements: 

GNU Maketools, 3d acceleration