I'm not going to write anything funny about Tasha's Game, because it's already a game about a woman rescuing her friends and co-workers from evil black tentacles with the help of her magical flying cat Snoopy. It hardly needs embellishment. I will tell you that Double Fine Games—who are responsible for crazy 3D platform adventure and cult hit Psychonauts—are somehow involved, so expect oddness.
Control Tasha with [WASD] or the [arrow] keys, and move Snoopy with the mouse. Collect floating icons with your cat cursor, and you can use them to create platforms out of thin air. If you make a mistake, you can use the [-] key (minus) to zap back in time to just before you placed the last platform—a very nice feature, if not entirely ergonomic.
True, Tasha's Game is relatively short, but I pretty much decided it deserved to be featured after a rosy-cheeked tree in the game complained that I was standing on its head. The platforming controls are simple but smooth, there's a full bevy of hats to collect (they're actually called "Pointless Unlockables", in case you're still wondering how seriously the game takes itself), and the shocking final boss encounter is, frankly, amazing.
Also, the title is randomly generated every time you play, so reload the page a couple of times for extra value. I played it while it was called "tasha's final karate zero", which, logically speaking, makes me the coolest person alive.