[citation needed] In the original Spanish version (Phantis), the player controls Commander Serena on a mission to rescue her expedition partner captured on Moon 4 of the SOTPOK System, better known as the world of Phantis.

After it has been discovered that he has been imprisoned on the jail planet Phantis by the heirs of the empress Gremla, Major Locke is chosen for the rescue mission.

The Atari ST version was never published in Spain and only exists with the Game Over II title.

The game's promotion included an appearance of a model dressed up as Queen Gremla at the trade convention PC Show '88.

[7] A spiritual successor to Phantis featuring a modern take of the characters and setting, titled Ultionus: A Tale of Petty Revenge, was released in 2014.