Return to Castle Wolfenstein

Team-based RTCW multiplayer in a community WebAssembly preservation project.

DesktopMultiplayer

Play in your browserOpens the community project in a new tab.

Before you jump in

Desktop Chrome is recommended. The first load downloads about 380 MB, cached for later visits.

Start here

Open the RTCW project in desktop Chrome.
Enter a player name and press Play.
Wait for the first game-data download, then click the game to focus the keyboard and mouse.

Project information reviewed 2026-10-11. The game runs on the linked project’s website.

Why does the first launch take so long?

The project downloads about 380 MB on the first visit and caches the data for later visits.

Which Wolfenstein mode is this?

This entry is a community browser port for Return to Castle Wolfenstein multiplayer.