Ja tem uma página na steam e ja tem os requisitos.
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minimum:
os: 64-bit: vista, win 7, win 8
processor: intel core i5-750, 2.67 ghz | amd phenom ii x4 965, 3.4 ghz
memory: 3 gb ram
graphics: nvidia geforce gtx 460 | amd radeon hd 5850
directx: version 11
network: broadband internet connection
hard drive: 25 gb available space
recommended:
os: 64-bit: win 7, win 8
processor: intel core i7-3770, 3.4 ghz | amd fx-8350, 4.0 ghz
memory: 8 gb ram
graphics: nvidia geforce gtx 660 | amd radeon hd 7950
directx: version 11
network: broadband internet connection
hard drive: 40 gb available space
PC Intel Core i7 2600 de 3,4 Ghz. Placa de Video Geforce GTX 970. Hd 3TB. Monitor LG 20. Fonte Corsar CX600. 12GB RAM.