Minimum System Requirements
Windows
OS:
Windows® 10/8.1/8/7/Vista/XP
Memory:
4 GB RAM
Graphics:
512 MB of memory or more. Requires support for Shader Model 2.
Storage:
18 GB available space
Notes:
Version 9.0c; With "memory available" and "model & texture quality" settings on "low" on 32-bit systems or systems with 4 GB of memory or less.
macOS
OS:
OS X Mavericks (version 10.9) or later
Storage:
10 GB available space
Recommended System Requirements
Windows
OS:
64-bit Windows® 10/8.1/8/7
Processor:
64-bit
Memory:
6 GB RAM
Graphics:
Dedicated graphics card with 1024 MB of memory or more. Should have support for Shader Model 3.
Storage:
18 GB available space
Notes:
Version 9.0c
These are the requirements the publisher lists on Steam.