Gunboat - River Combat Simulation_Disk2 ROM Download for Amiga 500 (A500). Gunboat - River Combat Simulation_Disk2 game is available to play online and download only on Late Games. Gunboat - River Combat Simulation_Disk2 ROM for Amiga 500 download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.