Galaxy Force II is a shoot 'em up that uses the Z-axis instead of the standard horizontal or vertical orientations of other games in the genre, similar to its Sega contemporaries After Burner and Space Harrier. It is the sequel to Galaxy Force, though it might be more accurate to call it a remaster of that original due to the large amount of shared content: it also fixes the first game's bugs and adds a few new stages.
After its arcade debut Galaxy Force II appeared on multiple home computers before eventually finding its way onto the Sega Genesis and Sega Saturn. It would later appear in a few Sega compilations, like Sega Ages 2500, before being turned into a 3D-enabled game by M2 for their Nintendo 3DS Sega 3D Classics line, where it was renamed 3D Galaxy Force II. The Genesis port is also available as a standalone game on Steam.