minimal:
reqprocessor: 2.6GHz Intel i3 or equivalent
reqgraphics: Nvidia 6xx series (driver version: 355.11)
reqmemory: 4 GB RAM
reqdiskspace: 35 GB available space
reqsystem: Ubuntu 14.04 64-bit, SteamOS
reqother: NOTE: AMD and Intel graphics cards are not currently supported by Alien: Isolation. Game requires at least OpenGL 4.3

recommended:
reqprocessor: 3.2GHz+ Intel i7 Quad Core
reqgraphics: Nvidia 970 (driver version: 355.11)
reqmemory: 8 GB RAM
reqdiskspace: 35 GB available space
reqsystem: Ubuntu 14.04 64-bit, SteamOS
reqother: NOTE: AMD and Intel graphics cards are not currently supported by Alien: Isolation.