Valve has used PAX to release a few images highlighting the co-op mode that will be present in Portal 2.
If you’ve been following announcements about the game, you’ll know that in co-op the playable characters are a modified GLaDOS personality core and modified defence turret. As yet, these chaps are unnamed, so I’m going to opt for calling them Whizzer and Chips.
Look below for robo-empathy images.
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