Reliquary

"Reliquary" is a far-future worldbuilding and exploration game set tens of millions of years ahead, where civilization has risen and fallen multiple times. Players traverse a massive megastructure, the Coil, left by a previous iteration of civilization, to uncover remnants of ten major extra-solar civilizations. As humanity rises again, they must navigate the Coil's dangerous and unmapped strata, housing ancient buildings, artifacts, machines, and creatures, while trying to understand their place in this mysterious world.