: Ensure your PC meets the basic requirements. This game runs on the GoldSrc engine and works on almost any modern Windows PC, including those with integrated graphics. 2. Essential Fixes & Setup
: Review guides on the PCGamingWiki to find "Fixes Packs" that resolve black screens and performance issues on Windows 10/11. : Ensure your PC meets the basic requirements
: Buying the official version includes Condition Zero: Deleted Scenes , a standalone single-player campaign with unique missions. : Ensure your PC meets the basic requirements