For a limited time, three popular iOS games from Id Software, including the classic first-person shooter archetype Castle Wolfenstein (Classic Platinum version) are on sale for $1, a savings of up to $4 depending on the game. Castle Wolfenstein Classic Platinum is a touch-adapted version of the original game and includes all six original episodes. Also on sale are Doom Classic, Doom II RPG, Doom Resurrection, Rage and Rage HD.
