A coop map made for the 2011 summer mapping initiative. https://www.thinking.withportals.com/ Have fun people!...

Be sure to make use of the 'tab' function in which you can see what your partner sees. Keep in mind in cooperative chambers you must employ two sets of portals. Teamwork and communication is key to completing any cooperative test chamber....

This coop map is rather a race track than a puzzle. Use your portal gun cleverly to trick your opponent and be the first to reach the finish line! You will probably need a few laps until you know all tricks - so give it a second try! Please note that this ...

Like the first Gelocity, this coop map is a race track again: Use your portal gun cleverly to trick your opponent and be the first to reach the finish line! But this time it's a little more dynamic: You can use your ping tool to trigger traps which can sto...

Well, you might have played Gelocity 1 or 2. So you will know what this is about: This is NOT a puzzle, it's a race track covered with orange speed goo. You have to run, jump and portal your way through the course and - like in Gelocity Stage 2 - you can s...

I drive a Chevrolet movie theatre....

Lightbridge and Excursion Well Lunacy 2 Part 2 of 3 (I've added grates in front of the turrets to keep them as non helpless victims (thanks Chelliste and Pharaoh)...

Don't move. Cooperate plus cognate....

You must not cooperate....

If there were twice as many of you we would have four times the lack of brain cells in this chamber....

Have fun and good luck!...

This coop map consists of 3 testing chambers and features different kind of testing elements. It is not very long map though and maybe not all that tricky, but I hope you enjoy it nonetheless! :D...

Test of Confusion Tested by: Blue Square...

Great trilogies come in threes. You are only a duo....