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Quality ControlCollection by HugoBDesigner
Welcome to Aperture Science's Quality Control Testing Initiative! A series of maps dedicated to deeply test the properties (and quality) of all sorts of testing elements. Buttons, Bridges, Lasers, Cubes, Gels, Panels and more! Subscribe for testi
Tests 1Collection by kmwsky1
Test ChambersCollection by kmwsky1
KelReposit - Portal 2Collection by KelanianWesterndayser
A collection of my testing chambers.
Co-op Collection packCollection by Csylunmew
Just a collection of co-op maps to play with a friend.
Portal 2 - Great (Tested) CO-OP MapsCollection by cypto²
Countdown to Extinction (Director's cut)Collection by jk7201
This is a special version of the Countdown to Extinction collection. It contains the original maps plus some extra stuff. The difficulty increases as you proceed, so following the suggested map order is highly recommended.
VenturaCollection by Skyferret
A 3 part series in Industrial/ Underground/ Reconstruct themes. Each map involves repulsion gel. There is also tractor beams, fizzler fields, light bridges and some portal flinging.
GloomShine Test ChambersCollection by gloomshine
These are my Portal 2 test chambers. Check 'em out and have fun!