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Rhythm Battle with Tails

rhythm game music

Developer: Elf Shift Studio

Published: 2026-01-23

Updated: 2026-06-07

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Reviews

FNF vs Sonic.ERR (Tails) offers an enjoyable rhythm experience with its engaging music and straightforward gameplay. The arrow key controls are easy to learn, making it accessible for players of all skill levels. The game's family-friendly content ensures a safe and positive experience. Overall, it's a well-crafted mod that fans of rhythm games will appreciate.

Description

Game Introduction

FNF vs Sonic.ERR (Tails) is an online rhythm game where you face off against Tails in a musical battle. Based on the popular Friday Night Funkin' mod, this game challenges you to hit notes in sync with the music. With catchy tunes and engaging gameplay, it offers a fun experience for players of all ages. The game is open-source and free to play, with credits to the original developers and mod creators. Dive into the world of Sonic.ERR and test your rhythm skills against Tails.

How to Play

To play FNF vs Sonic.ERR (Tails), use the arrow keys on your keyboard to match the arrow symbols that appear above BF's head. Hit the correct keys in time with the music to score points and progress through the songs. Avoid missing too many notes in a row, as this will cause you to restart from the beginning. Complete all the notes in each song to win and advance to the next level. Practice makes perfect, so keep trying to improve your timing.

Game Features

Rhythm-based gameplay with arrow key controls and catchy music. The game includes multiple songs to play through, each with its own unique beat and pattern. As a mod of Friday Night Funkin', it features a distinct visual style and character design inspired by the Sonic.ERR universe. The game is open-source and free to play, encouraging community contributions and modifications.

Tips for Success

Focus on the rhythm of the music to anticipate note patterns. Start with easier songs to build your skills before attempting more challenging ones. Practice regularly to improve your timing and reaction speed. If you find yourself missing notes, try to relax and keep your eyes on the arrow indicators rather than the characters. Remember that consistency is key—hitting a steady stream of notes is better than rushing and missing.

❓ Having issues?

✅ This game supports: - Desktop browsers (Chrome, Edge, Safari) - Mobile browsers (Chrome on Android, Safari on iOS) ❌ Does NOT support: - Internet Explorer - Very old browser versions 👉 Try refreshing or updating your browser

Faq

Is this game free to play?

Yes, FNF vs Sonic.ERR (Tails) is free to play. It is an open-source mod based on Friday Night Funkin', and no purchase is required to enjoy the full experience.

Can I play this game on mobile devices?

The game is primarily designed for desktop browsers with keyboard controls. Some players may find it works on mobile devices with external keyboards, but touch controls are not officially supported.

Who created this mod?

This mod was created by the Friday Night Funkin' modding community. Credits go to the original developers of Friday Night Funkin' and the mod creators who adapted the Sonic.ERR character and music.

How many songs are in the game?

The exact number of songs may vary depending on the version, but typically such mods include a few original tracks. The focus is on quality and challenge rather than quantity.

Do I need to install anything to play?

No installation is required. FNF vs Sonic.ERR (Tails) is an online rhythm game that runs directly in your web browser, making it easy to start playing immediately.

Can I customize controls?

Most online versions of this game use the default arrow key controls. Some versions may offer control customization, but this is not guaranteed. Check the game's settings menu for options.