Portal Alternatives

"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.

The Stanley Parable is an Action, First-person Perspective, Puzzle-Platform, Exploration and Single-player video game created and published by Galactic Cafe.

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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.

What happens when you mash Super Mario Bros. and Portal together?

Proteus - Proteus is a great electrical suite for circuit simulation purposes. You can simulate a single processor or multiple ones at the same time. The application is a great alternative for Virtual System Modelling.

Philosophical first-person puzzle game.

Portile is a 2d, tile-based take on Narbacular Drop (more than Portal, because momentum plays a big...

Using two interconnected portals you can place on walls, ceilings and the floor, you must navigate your way through a sentient dungeon.

Spatial video-chat worlds for work and play

Virtual space platform to help remote teams collaborate.

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Graphic style similar to Portal. Time based puzzles with a twist.

A free open source game with teleportation.