The geometric horror game Euclidean is Lovecraft levels of scary

Tentacles made of cubes reach for you from within the watery abyss. "You're not supposed to be here," an unseen being informs you as you descend into the first level of the game Euclidean. Deep sea creatures made of shapes swarm, pulse and strain around you-and soon, they notice you. "Everything here will kill you," the voice intones a few moments later. (more")