Abstract The MUGEN engine, a freeware 2D fighting game engine developed by Elecbyte, has fostered a unique ecosystem of user-generated content since its release in 1999. Among the most prolific and technically complex sub-genres of MUGEN development is the implementation of "Fatalities"—finishing moves popularized by the Mortal Kombat franchise. This paper explores the technical architecture required to enable fatalities in a sandbox environment, the artistic trend of "hyper-violence" within the community, and the legal and cultural implications of porting proprietary finishing moves into an open-source ecosystem.
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The proliferation of fatalities in MUGEN raises significant intellectual property questions. Mortal Kombat is a registered trademark of Warner Bros. Discovery/NetherRealm Studios. Digital Anarchy: The Aesthetics and Mechanics of "Fatality"
Crossover Integration: The engine allows for non-MK characters, such as those from Anime Crossover 3D M.U.G.E.N (220+ characters) or even guest icons like Jason Voorhees and , to perform these brutal finishers. Leading Creators and Recent Characters (2024–2026) Variability in quality: newer characters may range from
scene has seen significant updates in 2025 and early 2026, particularly within the Mortal Kombat Project (MKP) community. New character builds now feature highly creative fatalities, expanded rosters, and technical enhancements that allow for deeper customization of finishing moves. Key MUGEN Releases & Character Updates (2025–2026)
: A 2026 "Ultimate MUGEN Experience" that serves as a tribute to the golden era while adding refined modern finishers. Revelations Revival (2026)