Valve has removed controversial games AIDS Simulator, ISIS Simulator, Asset Flip Simulator and Triggering Simulator from the Steam Store, as was first noticed by Twitter user @RobotBrush and reported by GI.biz. IGN has also discovered via Steam Tracker, which tracks Steam games’ status changes, that Valve has removed Suicide Simulator and Blackscreen Simulator.
These banned games were all created by developer BunchOD00dz. A developer in only the broadest sense of the term, BunchOD00dz cobbled together each game using pre-purchased assets and development toolkits. Asset Flipper takes its name from this process in a not-so-subtle joke about how easy it has historically been to get just about anything approved for sale on Steam.
Source: IGN.com Valve Removes Controversial Games About AIDS, ISIS from Steam