# Return to Castle Wolfenstein — Pieter’s web build

Canonical: https://playable.wtf/games/return-to-castle-wolfenstein-browser/

Project ID: project:return-to-castle-wolfenstein-browser

Play the mp\_beach multiplayer map through Pieter’s iortcw browser build.

## About this version

This Return to Castle Wolfenstein client runs iortcw multiplayer in the browser. The host highlights mp\_beach and recommends desktop Chrome; allow for an initial download of about 380 MB.

Browser launch. Shooter.

[Play on creator site](https://rtcw.pieter.com/)

## Wolfenstein as a team objective game

Return to Castle Wolfenstein's original release combines an action-horror campaign with a separate multiplayer game. The campaign follows B.J. Blazkowicz into a mixture of wartime installations and supernatural threats. Multiplayer instead places Axis and Allied teams against one another around objectives.

That distinction matters here: a page bearing the Return to Castle Wolfenstein name does not necessarily offer the campaign. The browser host describes its playable destination as multiplayer on mp\_beach, so team play is the reason to open this build.

Sources: [Bethesda · Return to Castle Wolfenstein description](https://store.steampowered.com/api/appdetails?appids=9010&l=english) · [Pieter · Return to Castle Wolfenstein launcher](https://rtcw.pieter.com/)

## The mp\_beach browser build

Pieter's version runs iortcw through Wwasm and identifies mp\_beach as its multiplayer map. It is an unofficial browser adaptation, with the familiar player-name field and Play entry point. The stated scope is specific enough to plan a session around that map rather than expecting a complete server browser full of every community level.

The first visit downloads roughly 380 MB of game data. The host says that data is cached, so allow the initial transfer to finish before judging how quickly later visits start. A browser cache is local to the device and browser profile that received it.

Sources: [Pieter · Return to Castle Wolfenstein launcher](https://rtcw.pieter.com/)

## Allow time for the first download

Use a desktop browser; the host recommends Chrome. Enter your player name, select Play and leave room for the initial data load. This route is most useful when you want to reach the hosted multiplayer game without setting up a native client. For the single-player story or a different map collection, choose a release or project that explicitly includes it.

Sources: [Pieter · Return to Castle Wolfenstein launcher](https://rtcw.pieter.com/)

## How do I get started?

Enter a player name, select Play and allow the first game-data download to finish.

Creator-reported: [Project guide](https://rtcw.pieter.com/)

## Which devices and browsers work?

The host recommends a desktop computer and Chrome.

Creator-reported: [Project guide](https://rtcw.pieter.com/)

## Can I play multiplayer?

Join the host’s Return to Castle Wolfenstein multiplayer session using the player-name field and Play button.

Creator-reported: [Project guide](https://rtcw.pieter.com/)

## What is included in this version?

The hosted multiplayer route advertises the mp\_beach map. It is a multiplayer client, rather than a route into the single-player campaign.

Creator-reported: [Project guide](https://rtcw.pieter.com/)

## What should I know before playing?

The first load downloads about 380 MB of game data, which the host says is cached for later visits.

Creator-reported: [Project guide](https://rtcw.pieter.com/)

## Documented support

- Multiplayer: Supported · Creator-reported
- Online multiplayer: Supported · Creator-reported

## Credits and project

- [Original project](https://rtcw.pieter.com/)