Updated Oct 10, 2026 · 1 link from the Radiant Optimizer list
WebXash runs the open-source Xash3D engine in a browser, and Xash3D can run Counter-Strike 1.6. You supply the valve and cstrike folders from games you own.
If you only want to move fast on surf maps, Surfd needs no files at all.
Listed in the post as Half Life / CS 1.6.
WebXash runs the open-source Xash3D engine, which can play Half-Life and Counter-Strike 1.6. It needs the valve and cstrike folders from games you own.
Open project ↗Opens a third-party site. Skip anything that asks you to install a launcher or extension.
CS 1.6 in browser on the Radiant Optimizer list runs through WebXash, a web build of Xash3D. Xash3D is an open-source engine that is compatible with Valve's GoldSrc, which means it can run Half-Life and its most famous mod, Counter-Strike 1.6. The engine is free; the game content comes from your own copies.
Copy both folders. CS 1.6 will not start with only one, which is the most common setup mistake.
WebXash is an engine port, so what you can do depends on the build. Plan on offline play: practicing on classic maps like de_dust2 or cs_office, learning spray patterns, or playing against bots if the build includes them. Online play with real servers is not the focus of a browser engine port.
Performance is rarely an issue. GoldSrc was built for late-1990s hardware, so any machine with working WebGL handles it.
Counter-Strike began in 1999 as a Half-Life mod by Minh Le and Jess Cliffe. Valve hired them and released it commercially, and version 1.6 arrived in 2003 alongside the launch of Steam. It became the definitive competitive shooter of its era, and many players still prefer its movement and maps to later versions.
If you do not own the games, CS surf in browser needs no files and recreates Counter-Strike surf movement. For full online shooters that need nothing, see Urban Terror in browser and Quake in browser. The Half-Life and Counter-Strike browser games page compares the Valve-related options, and Half-Life in browser covers the campaign.
Which maps you can load depends on the contents of your cstrike folder. A standard install includes all of these.
CS 1.6 in browser keeps the original controls: WASD to move, mouse to aim and shoot, R to reload, B to open the buy menu, and the number keys to switch weapons. The developer console, opened with the tilde key, still works in GoldSrc-compatible engines and lets you change sensitivity, crosshair settings or start a map directly. Commands from old configs usually carry over, so experienced players can recreate their old setup in the browser.
Counter-Strike 2, released in 2023, is free to play on Steam and runs on Valve's Source 2 engine, so it cannot run in a browser. CS 1.6 in browser offers something CS2 does not: the original 2003 movement, hitboxes, maps and atmosphere on a machine where you cannot install anything. For competitive online play, CS2 is the active game. For nostalgia, quick practice on classic maps, or a computer that cannot handle a modern shooter, the browser engine with your own 1.6 files is the lighter option.
WebXash is an engine port; online play depends on the build. Plan on offline play with bots.
WebXash focuses on running the engine. Expect offline play rather than public servers.
Running an open-source engine with files from games you own is the defensible setup. Downloading the game files elsewhere is not.
Yes, in Chrome or Edge on macOS, as long as WebGL is enabled.
It usually means only one of the two folders was loaded, or a folder from a modified install was used. Load both valve and cstrike from a clean install.
