Minimum:OS: Windows 7 / Vista / XP Processor: 2 GHz Intel Dual Core processor / 2.6 GHz Intel Single Core processor, or AMD equivalent (with SSE2) Memory: 1GB RAM (XP), 2GB RAM (Vista / Windows7) Graphics: 256 MB DirectX 9.0c compatible card (shader model 3) DirectX®: DirectX 9.0c Hard Drive: 32GB free hard disk space Screen Resolution: 1024x768 minimum

Minimum:OS: Steam OS or Ubuntu 16.04 Processor: 2GHz Memory: 4GB RAM Graphics: 1GB Hard Drive: 26GB HD space Other Requirements: Nvidia 600 series+, AMD 6000 series+, Intel Iris Pro. Driver Details: Nvidia cards Require driver version 375.26 or better. AMD and Intel cards require MESA version 17.0.4 Additional Notes: The system requirements represent the specifications that have been officially tested. Other modern drivers and distributions are expected to work but are not officially supported. Multiplayer Notes: Multiplayer is compatible between Linux versions onlyRecommended:OS: Steam OS or Ubuntu 16.04 (64 bit required) Processor: 3GHz Memory: 4GB RAM Graphics: 2GB Hard Drive: 26GB HD space Other Requirements: Nvidia 700 series+, AMD R7 series+ Driver Details: Nvidia cards Require driver version 375.26 or better. AMD and Intel cards require MESA version 17.0.4 Additional Notes: The system requirements represent the specifications that have been officially tested. Other modern drivers and distributions are expected to work but are not officially supported. Multiplayer Notes: Multiplayer is compatible between Linux versions only

OS: macOS 10.14.5 Processor: 1.1 GHZ Intel Core M or greater Hard Disk Space: 24GB Graphics: NVIDIA GeForce GT 640M 512MB, AMD Radeon R9 M290, Intel HD Graphics 4000 Hard Disk Space: 24GB Additional Notes: The game is officially supported on the following Macs. To check your Mac model and when it was released, select About This Mac from the Apple menu on your menu bar. * All 13” MacBook Pros released since Mid 2012 * All 15” MacBook Pros released since Mid 2012 * All 12” MacBooks released since Early 2016 * All MacBook Airs since Mid 2012 * All Mac minis released since Late 2012 * All 21.5” iMacs released since Late 2012 * All 27” iMacs released since Late 2012 * All 27" iMac Pros released since Late 2017 * All Mac Pros released since Late 2013Pre 10.14.5 Users: Players using a version of OS X before 10.14.5 can access a compatible version of the game via the Beta tab in the game’s properties window. Select the ‘Mac_Retail_1.4 - macOS 10.14.4 or older only' branch for a version that is compatible with 10.9.5 up to 10.14.5.