Solstice had also an obscure sequel for SNES in 1994, named Equinox (re-titled Solstice II in Japan). Many years after the first game, Shadax is imprisoned by his treacherous apprentice Sonia, who then sends her army to take over the seven kingdoms across the world. It's now up to Glendaal, a son of Shadax, to set off on a journey to rescue his father and put an end to her reign.
Solstice and Equinox provide examples of:
- Badass in Distress: Equinox has Shadax, the hero of Solstice, captured by his apprentice Sonia.
- Cutscene Boss: You actually don't get to fight Morbius in the first game. Once you gather all pieces together to form the Staff of Demnos, the main character will automatically use it to zap him out of existance.
- Dismantled MacGuffin: The Staff of Demnos in the first game.
- Excuse Plot: Although the game does have elaborate opening told through in-game engine, it's no Ninja Gaiden, and it doesn't touch it further than that Morbius is kind of jerk. The story is just there to make up the game. The same also applies to Equinox.
- Isometric Projection
- Market-Based Title: Equinox was re-named Solstice II in Japan, clarifying that this is a sequel to the NES game.
- Spin-Offspring: The protagonist of Equinox is a son of Shadax in the first game.