OMSI 2 (BUS Simulator) Off to the next round! Experience a new omnibus simulator with OMSI 2 and start discovering Spandau while driving the omnibus. OMSI 2 is the successor of the well-known and awarded omnibus simulator "OMSI - The Bus Simulator". OMSI 2 not only offers the routes and buses you already know from OMSI, but adds lots of exciting new features.