Aperture Tag is a Portal 2 mod inspired by Tag: The Power of Paint, the 2009 DigiPen student project which influenced Portal 2's gel mechanics and puzzles. Instead of shooting portals, you shoot the game’s orange and blue liquids, which make you run faster and jump higher, respectively. And now you'll be able to add your own mods to the mix.
When billionaire bro Cave Johnson turned his vision away from the exciting world of shower curtains to tossing money at a bunch of science stuff, what if paint guns instead of portals were the result? That's the setting for Aperture Tag: The Paint Gun Testing Initiative, a fledgling Portal 2 mod boasting 26 new puzzle floors designed for no portals whatsoever. Instead, we'll sail through that exit door by laying down carpets and dollops of the much-adored red and blue paint for speedy acceleration and longer airtime.