It combines elements of fantasy, science fiction, superhero and other genres and occasionally lends itself to power gaming.

[3] Synnibarr is set on Mars 50,000 years in the future, hollowed out and turned into a spaceship to take humanity to a safe place after Earth was destroyed.

Synnibarr is also noted for bizarre monsters, including the Giant Mutant Fire Clam and the Flying Grizzly, the latter being capable of shooting laser beams from its eyes.

The third edition game mechanic replaces the previous percentile system with a streamlined skill-based system, where resolve and experience create cogency levels that are pitted against opposing cogency levels for determining results.

The descriptions of monsters, characters and locations alone make it a great supplement for any campaign.