Minimum System Requirements
Windows
OS:
Windows XP+
Processor:
Intel Core 2 Duo E4500 @ 2.2GHz or AMD Athlon 64 X2 5600+ @ 2.8 GHz
Memory:
2 GB RAM
Graphics:
ATi Radeon HD 2400 or NVIDIA GeForce 7600+
Storage:
2 GB available space
Notes:
Version 9.0c
macOS
OS:
Mac OS X 10.7+
Processor:
1.7 GHz Intel Core i5
Memory:
2 GB RAM
Graphics:
NVIDIA GeForce 8600M or better / ATi Radeon 2400 or better
Storage:
2 GB available space
Linux
OS:
Ubuntu 10.10+ or SteamOS+
Processor:
2.2 GHz CPU
Memory:
2 GB RAM
Graphics:
ATI Radeon HD 2400 or NVIDIA GeForce 7600 or better
Storage:
2 GB available space
These are the requirements the publisher lists on Steam.
