Microsoft Train Simulator 2 (MSTS 2) was a train simulator developed by Microsoft Game Studios until it was postponed indefinitely due to the closure of ACES Studios.MSTS 2 was first announced on January 19, 2007 (2007-01-19) and originally scheduled for release in the last quarter of 2009. The program's lead designer, Rick Selby, also announced in late 2008 that it was to be compatible with Windows XP, Windows Vista and Windows 7.