Steam, available now for PC at a discounted price of $8. The sale runs through December 12, when the game jumps back to $10.
Oozi: Earth Adventure was released episodically on XBLIG, but is now gathered in full on Steam. It follows the alien Oozi, who crash lands on Earth, loses his space suit and has to find his way home. Oozi is a straight-up platformer, without any distracting puzzles or punishment, developer Awesome Games says. It features difficulty settings spanning "Kid" to "Hardcore."