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PC Gamer: Portal 2 maps - 13 inventive, innovative community challengesCollection by Aradalf
PC Gamer's Portal 2 maps: 13 inventive, innovative community challenges Now in an easily-accessible list!
Alternative Testing ElementsCollection by Tactical Shrubbery
This paticular testing track runs through a series of experimental chambers designed to test prototype testing elements. As such we shall need to know immedeatly if something goes wrong or does not happen the way we have intended.
Top 13 InovationsCollection by Tipy4
PC gamer's 13 most inovative portal community maps. http://www.pcgamer.com/gallery/portal-2-maps-13-inventive-innovative-community-challenges
I'm differentCollection by aib
Unique maps I've stumbled upon.
PackSciences likesCollection by PackSciences
What I really liked as a French Portal 2 player.
swagCollection by Gareth48 SuperiorServers.co