minimal:
reqprocessor: 3.4GHz Intel Core i3-4130, 3.5GHz AMD FX6300
reqgraphics: 1GB Nvidia 650ti or better (driver version 367.28), 2GB AMD R9 270 or better (Mesa 13.0.1 driver compiled using LLVM 3.9)
reqmemory: 4 GB RAM
reqdiskspace: 29 GB available space
reqsystem: Ubuntu 16.10 64-bit, SteamOS 2.0
reqother: AMD GPU's are not supported on Steam OS. Intel GPU's are not supported at time of release.

recommended:
reqprocessor: 3.4 GHz Intel Core i7-4770
reqgraphics: 4GB Nvidia 970 (driver version 367.28), 4GB AMD RX 480 (Mesa 13.0.1 driver compiled using LLVM 3.9)
reqmemory: 8 GB RAM
reqdiskspace: 35 GB available space
reqsystem: Ubuntu 16.10 64-bit, SteamOS 2.0
reqother: AMD GPU's are not supported on Steam OS. Intel GPU's are not supported at time of release.