About Unreal Tournament 2004
Unreal Tournament 2004 is a first-person arena shooter developed by Epic Games and Digital Extremes, the third game in the Unreal Tournament series and an updated re-release of Unreal Tournament 2003. Atari published it for Windows and Linux on March 16, 2004, and a macOS version followed on March 30. Built on Unreal Engine 2.5, it was praised for its variety and its multiplayer.
Its biggest addition was Onslaught, a vehicle mode designed by Psyonix in which teams link power nodes toward the enemy base and destroy its power core. Assault returned from the first Unreal Tournament, alongside Capture the Flag, Bombing Run, Double Domination and Deathmatch, across more than 100 maps. Movement includes double jumps, dodge jumps and wall dodges. Epic shut down its servers for the game in January 2023, and in February 2026 the fan group OldUnreal re-released it as freeware with Epic’s permission.
How it runs in your browser
Unreal Engine Web Ports is a non-commercial fan project that compiles classic Unreal-engine games to WebAssembly, and says it isn’t affiliated with Epic Games or with OldUnreal. Pressing Play opens its UT2004 build on unrealcollection.games in a new tab.
The build runs patch v3369, which the site calls the latest patch and the heaviest of its builds. Game data downloads into your browser’s storage on first launch, and the site says to budget up to about 8 GB. It warns that the menus may freeze while browsing maps and mods, because each item’s files download first: “It is loading, not hung.” Total conversions such as Alien Swarm, Ballistic Weapons, Killing Floor and Neotokyo need a full download the first time.
For multiplayer, you can host a listen server over WebRTC and share an invite link, or use a private room code. An experimental proxy mode joins internet servers through the in-game browser. The launcher also offers a map picker with mutators and bot counts, mod uploads and an option to unlock all content.
On 3 November 2026, in desktop Chrome, it loaded to the UT2004 main menu, with Single Player, Join Game, Host Game, Instant Action, Community and Settings. On a fresh browser profile that took about 15 minutes, roughly 870 MB of downloads and about 2.5 GB of disk space, most of it spent precaching before the engine started. Later visits use the cache. We didn’t start a match.
Controls and devices
The site asks for a desktop browser with a keyboard and mouse, and names a recent Chrome, Edge or Firefox with WebGL. Esc opens the menu. If the mouse doesn’t lock, press Esc, return to the game and left-click. The key layout isn’t listed, so check the game’s settings. Phones aren’t mentioned, and we haven’t tested one.
Who it’s for
It suits anyone who misses Onslaught on ONS-Torlan, or wants a quick Deathmatch against bots without an install. Clear some disk space first. For the series’ roots, see Unreal Tournament, and for its Xbox follow-up, Unreal Championship 2.
Is Unreal Tournament 2004 Free, Safe and Official?
Can I play UT2004 online in a browser?
Yes. The fan site unrealcollection.games lets you host a match and send an invite link, or join games in a shared or private room. An experimental proxy option also joins internet servers. It isn’t made or endorsed by Epic Games.
How big is the UT2004 browser download?
It’s the heaviest build on the site. The game downloads into browser storage on first launch, and the site says to budget up to about 8 GB of browser storage. Total conversions need a full download the first time, and later launches start from the cache.
Do I need my own copy of Unreal Tournament 2004?
No. The site serves the game data itself, so there’s nothing to install and no files to supply.
