My favourite Portal 2 single player test chambers produced by the community. These test chambers were selected on the quality of their design regardless of their difficulty levels or complexity. Remember that complexity is not a measure of challenge or ing

Warthog's Laser Chamber is my third series of tests. These tests are single room chambers that use lasers and it's components such as reflector cubes and laser catchers. Other testing items not related to lasers will be used at little as possible if not at

These puzzles are my puzzles that I (and the community) decide are fairly difficult and usually take over 5-10 minutes to solve on your first play-through.

Time Travel In Test Chambers Is A Concept!

A map series for Portal 2! Not too much story, GLaDOS is just cleaning stuff after Wheatley. Throught the whole series you encounter few unusual things, such as rotated chambers, floating cubes, fake exits, ETC. All the maps are done in the PTI Level Edito

This is a group of my Co-Op tests All of the current tests have a guide: www.youtube.com/Killer39800