Happy Trails (1983) (Activision) [o1].int ROM Download for Intellivision (). Happy Trails (1983) (Activision) [o1].int game is available to play online and download only on Late Games. Happy Trails (1983) (Activision) [o1].int ROM for Intellivision download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.