This game has two very short unused tracks, both of which can be listened to in the sound test with a patch code.

Jay McCray (the game's protagnoist) has a different sprite in the North American version than that of the European and Japanese versions.

The game was released in Japan as "Raf World".

Journey to Silius was originally a game based on the 1984 film The Terminator, however the deal had fell through resulting in the story and graphics being altered. It was intended to be released in 1989, the same year as Sunsoft's game based on the Batman film was to be released.