A fan made "Portal" (2007) 2D platformer game, made for the TI-84 calculator.

Portal. Enjoy blasting through space at breakneck speeds and almost being fried, crushed, and insulted all for the hope of cake at the end. With 78 total levels, the fun will probably end at some point. But that is why there is a level editor to make even more mind boggling puzzles. So, good luck, and remember that GLaDOS is always watching...