When the greatest inventor the world has ever known died, with no clear heirs, he left his legacy and any reward to be claimed in his "House." Dive into the unending superstructure, uncover its secrets and treasures... and survive the countless deathtraps, the mutants and ai that inhabit it, and most dangerous of all, the humans, Housers, native to the House, and outsiders, trying to claim its treasure. More will always come, but few who arrive will ever leave.