Counter-Strike 2 (CS2) is a competitive first-person shooter developed by Valve and is the latest installment in the Counter-Strike series, released on September 27, 2023, as a free upgrade to Counter-Strike: Global Offensive. Built on the Source 2 engine, it features significant technical and graphical improvements, including advanced visuals with physically-based rendering, dynamic volumetric smoke grenades, and a "sub-tick" server architecture for more precise player input registration. The core gameplay maintains its objective-based format, pitting two teams—Counter-Terrorists and Terrorists—against each other in modes like Bomb Defusal and Hostage Rescue, with the goal of completing objectives or eliminating the opposing team to win rounds. CS2 includes a revamped Premier mode with a CS Rating system for competitive progression, alongside Casual, Wingman, Deathmatch, and Arms Race modes, catering to diverse player preferences while maintaining its reputation as a premier esports title.