In order to activate this game, you will require a third-party 'Steam' account. For full details on how to activate please follow this link: https://support.steampowered.com/kb_article.php?ref=5414-TFBN-1352
System Requirements
Windows - Minimum
OS: Windows 7 and higher (64 bit only)
Processor: AMD Phenom II X2 550, 3.1GHz | Intel Pentium G4400, 3.30GHz
Memory: 2 GB RAM
Graphics: GeForce GT 650 | Radeon HD 6570
DirectX: Version 11
Online Connection Requirements: Broadband Internet connection
Additional notes: For Windows 7, service pack 1 is required
Windows - Recommended
OS: Windows 10 (64 bit only)
Processor : Intel Core i5-3470, 3.20GHz | AMD FX-6300, 3.5Ghz
Memory: 4 GB RAM
Graphics: GeForce GT 660 | Radeon HD 7770
DirectX: Version 11
Online Connection Requirements: Broadband Internet connection