Uploaded April 2015 | Updated September 2026, 41 minutes ago

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- GLaDOS

This is my attempt, to introduce the style from the first- and thirdperson puzzle-adventure game "The Talos Principle" leak into the Portal 2 Perpetual Testing Initiative Editor (PTI-Editor), so that people, who have not bought it, can - almost - play it within their Portal 2 game experience.

All these tests are 100% built by me with the PTI-Editor and some puzzles are "copied" from the original game and some are made up by myself.

You can download and play any of these maps by your own and I have even created a complete collection in the steam workshop, so you can just press one button, to get installed all of the testchambers in your Portal 2 queue.

These are official walkthroughs, but when you got another solution to any of these tests, let me know, so I can improve the puzzles!

Here are the official solutions to all testchambers:
1 to 11 → youtube.com/watch?v=Q0zsCwC8RMQ
12 to 22 → youtube.com/watch?v=4fJBAEMhSF4
23 to 33 → youtube.com/watch?v=QROssPQubAo

Here is the complete collection:
steamcommunity.com/sharedfiles/filedetails/?id=429135756

And here are all the tests listed in order with the direct link to their steam workshop page:
Test 1 (0:00): steamcommunity.com/sharedfiles/filedetails/?id=429010471
Test 2 (2:32): steamcommunity.com/sharedfiles/filedetails/?id=429122203
Test 3 (4:50): steamcommunity.com/sharedfiles/filedetails/?id=429609830
Test 4 (8:50): steamcommunity.com/sharedfiles/filedetails/?id=429738860
Test 5 (13:54): steamcommunity.com/sharedfiles/filedetails/?id=430099013
Test 6 (Hard) (17:50): steamcommunity.com/sharedfiles/filedetails/?id=430300529
Test 7 (19:00): steamcommunity.com/sharedfiles/filedetails/?id=430524099
Talos 8 (22:44): steamcommunity.com/sharedfiles/filedetails/?id=430617400
Test 9 (24:50): steamcommunity.com/sharedfiles/filedetails/?id=430819240
Test 10 (28:50): steamcommunity.com/sharedfiles/filedetails/?id=431105383
Test 11 (32:15): steamcommunity.com/sharedfiles/filedetails/?id=431253253