Counter-Strike 1.6
CT vs T on fy_pool_day, everyone on one server. Runs the real game engine in your browser, nothing to install.
Map, mode and bots apply to offline play; the online server sets its own.
Pick your Half-Life install root (the folder with valve/ and cstrike/) or a zip of it. Files stay in this browser and never leave your machine.
First visit downloads about 100 MB of game data; later visits start in seconds. Click the game to capture the mouse.
Open full screen on poolday.gg ↗