Aperture Tag: The Paint Gun Testing Initiative is a Puzzle, Indie, Mod PC game, developed by Rockhopper Studios, available on Steam and published by Rockhopper Studios.
Aperture Tag: The Paint Gun Testing Initiative is a Portal 2 Mod. It's time to think with Gels! The Portal-Gun is gone, but the testing must go on! Grab the Paint-Gun Device and solve brand new test chambers in ways you've never solved them before!
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Puzzle Indie Mod Adventure Action Casual First-Person Singleplayer Great Soundtrack Sci-fi Co-op FPS Science Funny Parkour Comedy Level Editor Atmospheric Strategy Female Protagonist