Mushroom 11 deserves to be mentioned in the same breath as Portal, World of Goo and super-clever, mechanically-driven games. There's nothing else like it. It's hard to even imagine how such a wonderfully bizarre idea came into existence.
Mushroom 11 is a very different type of post-apocalyptic game. Instead of a human fighting zombies and looking for supplies, you play a green blob. Developer Itay Keren showed me some of the game and talked about the concept of playing a blob.