Release
A playable demo was released for multiple platforms in February 2004, including Microsoft Windows, MacOS, Linux on x86-32, and Linux on x86-64. An updated demo version, including all the bug fixes from official patches and some original content, was released on September 23 of the same year.
After being delayed from a late 2003 release,[10] Unreal Tournament 2004 was released in March 2004 in North America and Europe, for the PC (Linux x86-32/x86-64 and Windows). At release, the game could be purchased as a standard six-disc CD-ROM release or a special edition DVD-ROM release that included a Logitech microphone headset and a second DVD filled with video-tutorials on how to use the included UnrealEd. The European DVD release did not include the bonus extras. A DVD-ROM release without the microphone followed suit in the United States on April 13. All original PC versions of the game included a $10 mail-in rebate requiring that a short form be completed and sent to the publisher along with a copy of the manual cover for Unreal Tournament 2003, although in Europe the rebate required sending in the play CD for Unreal Tournament 2003 instead. MacOS version (DVD only) followed on March 31.
In summer 2004, Epic and Atari, in collaboration, released an XP Levels downloadable map pack, which included two Onslaught maps, ONS-Ascendancy and ONS-Aridoom.[11] The pack is free for download and use on any system capable of running the game.
In September 2004, Atari released in stores the "Editor's Choice Edition" of Unreal Tournament 2004 which adds three vehicles, four Onslaught maps, and six character skins to the original game, and contains several mods developed by the community as selected by Epic Games. This extension (excluding mods) was released as a Bonus Pack by Atari on September 23, and is available for free download.
The version for Windows x86-64 was released as a downloadable patch on October 1, 2005.
In December 2005, the Mega Bonus Pack was released online by Epic Games, which included several new maps, along with the latest patch and the Editor's Choice Edition content.
In June 2006, Midway Games acquired the publishing rights to the Unreal back catalog from Infogrames and Atari.[12] That November, Midway released Unreal Anthology, a bundle that includes Unreal Gold, Unreal II: The Awakening, Unreal Tournament (Game of the Year edition), and Unreal Tournament 2004.
In March 2008, Epic Games released the game on Valve's digital distribution service Steam, and was also included as part of the Unreal Deal Pack, followed later in the year by the "Editor's Choice Edition"[13] on GOG.com.
Subsequent Midway editions of Unreal Tournament 2004 omit the Linux installer from DVD game content.
In December 2025, the fan community OldUnreal announced that UT2004 was coming back with Epic's blessing, "free of charge" and with support for modern systems. As of January 2026, no specific release date has been given for the OldUnreal re-release, but shortly after its announcement, initial patch notes were posted online by community members involved with the project. OldUnreal expects public testing to begin sometime in early 2026.[14][15]