If you cast your minds back to last October you might remember a game called Paranautical Activity that got pulled from Steam after one its developers - Mike Maulbeck - launched a threatening tirade against Valve's Gabe Newell following a listing mistake for the game (if you don't remember, head here for the broad strokes).
Since then the FPS roguelike's developers, Code Avarice, has sold the rights to the game to Digerati Distribution, and as a result the title is now back on Steam with the subtitle Paranautical Activity: Deluxe Atonement Edition. It also now includes an extra level type, a new weapon, and a new item. If, like us, you already had a copy of the game on Steam from before it got kicked, you'll find it has been updated in your library to the Atonement Edition, which is nice.