Refugium Peccatorum

Refugium Peccatorum is a megadungeon hexcrawl in a tropical paradise ruled by Hell! Fight Aztec-alligator men and their killing machine pets which were mutated out of the already deadly wildlife of the island! Explore the ruins of an ancient, spacefaring civilization built on blood! Find the treasures of an ancient, spacefaring civilization built on blood! Make money from the treasures of an ancient, spacefaring civilization built on blood! Fight a T-Rex with Laser eyes wigging out on Steroids! Fight a demon! You could even get it just for the incredibly deadly monster and alien rules!

Designed to be run with Nox Aeterna, but is easily convertible to any other percentile scifi game. Harder to convert to a non-percentile scifi system. Impossible to convert to say, D&D.