Minimum (Windows):
OS: Windows® 7/Vista/XP
Processor: Intel® Core™ 2 Duo E6600 or AMD Phenom™ X3 8750 processor or better
Memory: 2 GB RAM
Graphics: Video card must be 256 MB or more and should be a DirectX 9-compatible with support for Pixel Shader 3.0
DirectX: Version 9.0c
Storage: 15 GB available space

Minimum (Linux):
OS: Ubuntu 12.04
Processor: 64-bit Dual core from Intel or AMD at 2.8 GHz
Memory: 4 GB RAM
Graphics: nVidia GeForce 8600/9600GT, ATI/AMD Radeon HD2600/3600 (Graphic Drivers: nVidia 310, AMD 12.11), OpenGL 2.1
Storage: 15 GB available space
Sound Card: OpenAL Compatible Sound Card

Minimum (Mac OS X):
OS: MacOS X 10.11 (El Capitan) or later
Processor: Intel Core Duo Processor (2GHz or better)
Memory: 2 GB RAM
Graphics: ATI Radeon HD 2400 or better / NVidia 8600M or better
Storage: 15 GB available space