
Counter-Strike 2 is Valve's tactical first-person shooter and the current build of the long-running Counter-Strike series, replacing CS:GO in 2023 as a free upgrade on the same Steam entry.
The core has barely changed in twenty years, and that is the point. Two teams of five alternate between attacking and defending across short rounds. Terrorists plant a bomb at one of two sites; Counter-Terrorists prevent it or defuse it. Death is permanent until the round ends, so a single mistake costs you the round rather than a few seconds, and that weight is what gives the game its tension.
Between rounds you spend money earned from kills and objectives on weapons, armour and grenades. Managing that economy across a match — when to buy, when to save, when to force — is as much of the game as aiming, and it is where most matches are actually decided.
The move to Valve's Source 2 engine brought the visible changes: volumetric smoke grenades that react to gunfire and explosions rather than drawing a flat cloud, sub-tick updates so the server registers exactly when you fired rather than rounding to the nearest tick, and rebuilt lighting across the map pool.
The game is free to play on Windows. Revenue comes from cosmetic weapon finishes and cases, none of which affect gameplay, and from Premier mode's competitive ranking.
Valve has developed and operated the Counter-Strike series since acquiring the original mod in 2000, and updates CS2 directly through Steam.