VRChat - Create and play in virtual worlds with others
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.
Portal - Financial Aid Award Letter, - Messages and Calendar, - Grades.
Tag: The Power of Paint - Tag: The Power of Paint is an Action, Puzzle-Platform, Exploration, First-person Perspective, and Single-player video game created by Tag Team and published by DigiPen.
GlPortal - A free open source game with teleportation.
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.