The Perpetual Testing Initiative

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The High Flying Darboticus 9 Νοε, 2013 @ 4:56μμ 
I am taking the guess that "TeacherGaming" will use these kind of games to "educate" students in the classroom. They've done it with Minecraft already, so what will we do?
InfernoTNT 20 Αυγ, 2012 @ 1:56πμ 
try my map:Co-Op Map
man_sorin99 6 Αυγ, 2012 @ 7:22πμ 
so no coop no portal please
MrDyl 4 Αυγ, 2012 @ 10:59πμ 
http://steamcommunity.com/sharedfiles/filedetails/?id=87272506

a bundle of maps to date. and i did test them and they all are possible to compleate.
grester43hck 22 Ιουν, 2012 @ 5:54μμ 
hello guys i made my first chamber last day and it seems to be very difficult because my friends can´t pass it jajaja. I love the idea of find some new people to trying my chamber and can pass it. Enyoying it guys ¡

http://steamcommunity.com/sharedfiles/filedetails/?id=77906654

Apologies for my bad english. The reason is that i´m spanish haha
GGamer360 17 Μαϊ, 2012 @ 11:05πμ 
GoGo check my BunnyHop Tutoruial Map: http://steamcommunity.com/sharedfiles/filedetails/?id=72420067 really important for everyone
GGamer360 16 Μαϊ, 2012 @ 4:02πμ 
My newest Portal 2 map: http://steamcommunity.com/sharedfiles/filedetails/?id=72155403 PLEASE check it out, it is really nice and has challenging levels. And please wrtie some feedback as a comment.

Are you PRO enough to master my levels?

Good Luck and Have Fun!
Lord Nibbler 14 Μαϊ, 2012 @ 4:45πμ 
go to the properties for P2 in the library and the select verify local cache, I also had this problem
DreadHaven 9 Μαϊ, 2012 @ 4:28μμ 
I installed the update, but now Portal 2 doesn't work anymore. It keeps showing an error report regarding a failure to locate the opening menu. How do I fix this?
Omni *EZ KNIFE EZ LIFE 8 Μαϊ, 2012 @ 10:09πμ 
So, still waiting...