# Return to Castle Wolfenstein: browser project guide

A browser multiplayer preservation project for RTCW, with a substantial first load.

Collection: Shared list. Destination: Browser project. Device: Desktop recommended. Setup: Browser entry. Check: source / page only.

[Open browser project](https://rtcw.pieter.com/)

![Return to Castle Wolfenstein artwork](https://radiantoptimizergames.online/assets/setup-flow.svg)

Original editorial title illustration; not a game screenshot.

## The project behind this entrance

Pieter’s unofficial, non-commercial project uses the iortcw engine in the browser. Its landing page identifies the multiplayer map mp_beach. This entry is for multiplayer, not a verified complete single-player campaign.

## Starting and choosing your setup

Enter a player name and use the project’s Play control. The host recommends desktop Chrome and describes a first load of about 380 MB, cached afterward. That amount is the host’s current estimate, not our download measurement.

Use a connection where a large first load is acceptable. If loading fails, record whether the failure occurs before the player-name screen, during asset loading or while joining. We have not joined a server.

## Questions and answers

### Is this Wolfenstein 3D?

No. This host identifies Return to Castle Wolfenstein multiplayer, a different game from Wolfenstein 3D.

### Was this checked in a completed play session?

No. This directory reviewed the project page or creator documentation. Loading a page does not verify a completed game, a multiplayer connection or device performance.

## Sources and review

Source review: 2026-10-10. Gameplay and performance are not tested by this directory.

- [Creator / project website](https://rtcw.pieter.com/)
- [Previously reviewed Radiant account post mirror](https://w.twstalker.com/twentytwentyfor)