minimal:
reqprocessor: Intel Core i5 750 @ 2.6 GHz or AMD Phenom II X4 @ 3.2 GHz
reqgraphics: nVidia GeForce GTX460 or AMD Radeon HD5870 (2048MB VRAM with Shader Model 5.0)
reqmemory: 4 GB RAM
reqdiskspace: 7 GB available space
reqsystem: Ubuntu 16.04.3 LTS + SteamOS (latest)
reqother: soundCard: DirectX Compatible Sound Card with latest drivers

recommended:
reqprocessor: Intel Core i5 2400s @ 2.5 GHz or AMD FX 4100 @ 3.6
reqgraphics: nVidia GeForce GTX 680 or AMD Radeon HD7970 or better (2048MB VRAM or more, with Shader Model 5.0)
reqmemory: 4 GB RAM
reqdiskspace: 7 GB available space
reqsystem: Ubuntu 16.04.3 LTS + SteamOS (latest)
reqother: soundCard: DirectX Compatible Sound Card with latest drivers