


There are just over two-dozen test chambers in Aperture Tag, though a couple are recycled from the original game, spiced up by having no portal gun to solve them with. And, unlike most mods, Aperture Tag adds a price tag, meaning the first puzzle to solve is: should you pay for this? Unfortunately, there's no replacement for Portal 2's other elements, like enjoyable voice acting, excellent writing, and a well-balanced level of challenge. Jumping and running, in other words, replaces portals as the main tools to solve puzzles with.

Aperture Tag is a mod for Portal 2 that removes the portal gun and replaces it with one that fires gel: repulsion gel, which makes you bounce higher, and propulsion gel, which makes you move faster.
