Windows
Minimum:
OS: Windows 7
Processor: Intel Core 2 or AMD equivalent
Memory: 1 GB RAM
Network: Broadband Internet connection
Storage: 200 MB available space
Additional Notes: Network Bandwidth of 5Mbps for 540p, 3Mbps for 360p.
Linux
Minimum:
OS: Linux Ubuntu 12.04 or later, SteamOS 2.20 or later
Processor: Intel Core 2 or AMD equivalent
Memory: 1 GB RAM
Network: Broadband Internet connection
Storage: 200 MB available space
Additional Notes: Network Bandwidth of 5Mbps for 540p, 3Mbps for 360p.
Mac
Minimum:
OS: Mac OSX 10.7
Processor: Intel Core 2 or AMD equivalent
Memory: 1 GB RAM
Network: Broadband Internet connection
Storage: 200 MB available space
Additional Notes: Network Bandwidth of 5Mbps for 540p, 3Mbps for 360p.