FNF vs Sonic.ERR Remastered

Rating:4.7 (179 votes)
Released:February 26, 2026
Technology:HTML5 (Unity WebGL)
Platforms:Browser (desktop, mobile, tablet)

Get Ready to Battle Tails.ERR in This Spine-Tingling Rhythm Mod

FNFvsSonic.ERR Remasteredbrings a chilling twist to Friday Night Funkin’ with its horror-themed aesthetic, revamped visuals, and haunting new tracks. Step into the shoes of the player character and face off against the glitchy, corrupted Tails.ERR in a high-stakes musical showdown. Whether you're a long-time FNF fan or a rhythm game enthusiast, this mod delivers a fresh and eerie experience that’s not to be missed.

This remastered mod breathes new life into the classic ERR series with updated vocals, refreshed sprites, and a more polished presentation. It's also available as anoptimized FNF online web port, making it easier than ever to jump in and play—especially if you're on a school or work device where downloads are restricted.

Challenging Tracks That Test Your Skills

Dive into two intense songs that challenge both your timing and nerves:

  • Extinction
  • No-Salvation

Each track is designed to ramp up the tension, matching the mod’s dark and glitchy theme. The remixed audio and overhauled charting make for a truly immersive experience, whether you're playing through the first time or going for that perfect score.

What Makes This Mod Special?

Sonic.ERR Remastered isn't just a visual upgrade—it's a full reimagining of the mod with enhanced performance and smoother gameplay. The horror elements are more pronounced, the music hits harder, and the overall flow feels tighter. It's a must-play for fans of the original ERR series or anyone looking to test their skills in a more intense FNF setting.

Meet the Team Behind the Mod

This mod is brought to life by a talented group of creators who poured their passion into every detail. Here's a look at the key contributors:

Mod Creators

  • Dark_The_Player01– Director, Artist, Charter, and Musician
  • ElJoseMiPro– Programmer
  • Eydan02– Icon Artist

FNF Engine Contributors

  • ShadowMario– Main Programmer
  • bbpanzu– Additional Programmer
  • RiverOaken– Main Artist/Animator
  • Plus, contributions from the wider GitHub community

Original FNF Team

  • ninja_muffin99– Programming
  • PhantomArcade3kandevilsk8r– Artists
  • kawaisprite– Music
  • And all the open-source contributors on GitHub

Play Anywhere with the Web Port

One of the standout features of this release is theweb-optimized version. Designed with accessibility in mind, it allows players on devices like Chromebooks, Macs, or Linux systems—or those with limited storage—to enjoy the mod without needing to download or install anything. While some features may differ slightly from the original PC build, the core experience remains intact and fully playable.

If you’re able, consider supporting the modders and trying the full PC version for the complete experience. But for quick sessions or on-the-go play, the web version is a fantastic option.