Phantasy Star Gaiden, meaning "Phantasy Star Side Story", released in Japan on the Sega Game Gear, is likely a spin-off title within the Phantasy Star franchise. This would suggest a gameplay experience similar to other Phantasy Star titles, featuring RPG elements like exploration, character development, and battles.  Its specific mechanics and story details would likely be unique to this entry within the series, representing a self-contained adventure within the franchise's larger universe.

Phantasy Star Gaiden (Japan)

PGA Tour Golf II (USA, Europe)