Shamelessly following in the damp footsteps of Bioshock, Cryostasis: Sleep of Reason takes players on a terrifying trip into the unknown as they explore the dark, frozen, claustrophobic corridors and unlock the shocking secrets of the North Wind - an old nuclear ice-breaker trapped in an icy grave in the Arctic Circle. Playing as meteorologist Alexander Nesterov, gamers must fight against the intense cold by finding any remaining heat sources as they investigate the final days of the North Wind and unlocks the mysteries within. However, Alex is no ordinary meteorologist as he possesses a unique "Mental Echo" ability that allows him to relive the final memories of the dead and change their actions in the past, changing their future.