FNF Vs. Sonic.EXE (XAG) Ultimate

Rating:4.1 (91 votes)
Released:February 26, 2026
Technology:HTML5 (Unity WebGL)
Platforms:Browser (desktop, mobile, tablet)

A Wild New Spin on a ClassicFNFTrope

FNF Vs.Sonic.EXE(XAG) Ultimatebrings a fresh, chaotic twist to the infamousSonic.EXEuniverse. This Friday Night Funkin’ mod takes creative inspiration from the classic creepypasta while carving out its own identity with vibrant art, offbeat humor, and intense rhythm battles.

In this demo version, players face off againstXagreus (Xag), a zany yet menacing take on the Sonic.EXE archetype. He blends the manic energy of Looney Tunes characters like Taz the Tasmanian Devil with unsettling horror aesthetics — think wild fur, jagged quills, and a signature gold tooth. It's a perfect fit for the mod's unique tone: equal parts goofy and eerie.

Gameplay and Features

This mod currently features two playable songs, giving players a taste of what makes XAG stand out in the FNF modding scene. The encounter is designed to be both challenging and visually striking, with custom animations and character designs that bring the world of Xagreus to life.

While it nods to the originalVs. Sonic.EXEby Rightburst_Ultra, this version carves its own path. The team behind the mod has worked hard to move beyond overused tropes and instead deliver something more original in style and execution.

Development Team and Credits

The mod is developed byTeam Advance, led byOlimac31, who took over from the original creator,PurbleBun (formerly Polygon64). The collaboration of artists, coders, musicians, and voice actors has brought this twisted vision to life.

Key Contributors:

  • Olimac31– Director, Lead Coder, UI Artist
  • totallynotdumb (@Wat_u_want)– Lead Artist
  • Maxitox– Co-Director
  • TrainsGod– Musician / Voice Actor
  • JukoDuko– Voice Actor / Artist
  • ForFurtherNotice– Musician
  • PurbleBun (@PurbleBun)– Artist / Original Creator
  • Borupen– Concept Artist
  • ther3alchoccy (@Th3realchoccy)– Artist
  • Fieroso_lol– Artist
  • Leather128– Creator of Leather Engine

Special Thanks To:

JudiiDoodle, DaniGFBI, Luigi-Dono, CommandoDev, Springcritic, Syrolander, Jesus Viloria (@OficialViloria), LeftyDefty, Cytrogen, MathiMomos, DenkiDev, Acrylic (@thatsacrylic), IndeedNotFunny, Saster, EvaEva, Mari0Mari0


If you're a fan ofFNFmods that blend horror, humor, and high-energy beats,FNF Vs. Sonic.EXE (XAG) Ultimateis one worth checking out. It's a promising project with a strong visual identity and a clear sense of direction — and it's just getting started.