Quantum Conundrum - Quantum Conundrum is a First-person Perspective game with strong Sci-fi, Puzzle-Platform, and Single-player elements published by Square Enix and developed by Airtight Games.
GlPortal - A free open source game with teleportation.
Portal - Financial Aid Award Letter, - Messages and Calendar, - Grades.
Portile - Portile is a 2d, tile-based take on Narbacular Drop (more than Portal, because momentum plays a big...
Mari0 - What happens when you mash Super Mario Bros. and Portal together?
Antichamber - "A game with half of the attention to detail and imagination Antichamber has would be a smash hit - this bare-bones first-person puzzler is one of the most thought-provoking, engaging, and challenging video games ever developed.