Unreal Editor for Fortnite (UEFN) is a game development studio that was designed and developed by Epic Games. It integrates the functionalities of modern Unreal Editor versions with aspects of its predecessor Fortnite Creative. UEFN and also supports programming with Verse, giving creators the ability to build advanced games for Fortnite's Metaverse.

UEFN has a GUI that is similar Unreal Engine. It differs from Unreal Engine by allowing users to enter a live edit session, where game developers can playtest the project in Creative 1.0 simultaneously while editing via UEFN. Developers can use Creative 1.0's tools to move objects in the playtest and make simple changes, while also having the ability to live edit their game with UEFN, with changes being applied to the playtest in real time; changes made in the edit session by collaborators are automatically updated in UEFN, although changes made in UEFN must be pushed through the content service - a process that takes anywhere from thirty seconds, to several minutes depending on server availability and the hardware of the host. The most prominent feature is implementation of the Verse programming language to allow programming for players, objects, game logic, and the spatial environment. The addition of Verse gives Fortnite developers scripting ability, and has allowed for far more robust, advanced and unique experiences to be created in Fortnite. Verse is currently the only scripting method in UEFN. Amongst the Fortnite community, projects made with UEFN are referred to as 'Creative 2.0' while projects created in the original Creative gamemode are considered 'Creative 1.0'. ^{[1] [2]}

Many features in UEFN added capabilities for developers that were not possible or properly functional in Fortnite Creative. The ability to create games with complex systems and gameplay mechanics were not possible in Creative 1.0, due to incomplete systems such as it lacking any scripting language, inability to undo actions, and every other tool required to create complex working games or experiences. Creative 2.0 is the successor of Creative 1.0 that brings those tools to life, as well as additional Unreal Engine tools that increase the functionality and development standards of Fortnite Creative.

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In Fortnite, the Discovery is an in-game browser that allows players to search up published creator made games and play them. Each game in a Discover row consists of a thumbnail, title, and the current amount of players playing the experience. The algorithm works based on a mix of total clicks per view, player engagement, player retention, and the amount of V-Bucks users have spent after visiting a UGC experience. The addition of the public facing player count metric for each game was met with backlash from less popular developers, alleging that it makes it harder to build a player base when potential users browsing Discover see no players in an experience and thus negatively compounding algorithmic bias against them. Epic does this to allow better and high quality games to become more successful, however much exploiting from creators that make addictive and low-effort copied games that abuse the algorithm have ironically allowed low quality games to thrive and good games to be less or not successful at all, which is one of the major criticisms and drawbacks of the algorithm. In hopes of allowing better quality games to thrive, Epic Games is continuously updating and making changes to the Discovery algorithm. These efforts have been somewhat unsuccessful so far, with countless numbers of UEFN developers still constantly complaining about the low player counts their published games get, and how their high-effort games are always being outplaced by other simpler and more low-effort games. ^[8]

With the release of UEFN, and its new feature of importing custom content, Discovery was met with a wave of intellectual property infringement in its curated rows of creations, ranging from the public facing thumbnail, to in-game assets. These experiences were able to thrive in the Fortnite community due to poor internal content review policies and procedures at Epic. In a tweet posted February 23, 2023 the official Fortnite Creative account addressed the issue for the first time and although this content may sometimes still appear, it has been drastically reduced.

Another controversy that has troubled the beta stage of UEFN and the creator community is the use of requesting DMCA takedowns or action from Epic for experiences containing UGC created in Fortnite that is the same, or similar to other UGC created in Fortnite. Stemming from top creator TeamGeerzy filing an application to trademark "The Pit",^[9] and subsequently requesting Epic to takedown experiences with 'pit' terminology in the title (a common practice in many UGC ecosystems). Multiple experiences were then taken down by Epic which lead to major community backlash ultimately resulting in the official Fortnite Creative X account to respond to a tweet where they addressed the issue and reinstating the offending maps.^[10][11][12]

"Understanding User-Generated Content in Gaming". Pubnub. March 12, 2024.