Oswald D-sides Rhythm Game

Developer: Yellow Sun Studios

Published: 2024-10-21

Updated: 2026-06-07

Runs in your browser — no download.

Reviews

FNF Vs Oswald D-sides delivers a polished rhythm experience with three distinct songs that each test your timing in different ways. The Story mode adds a sense of progression, while Free mode is perfect for practicing difficult sections. The controls are tight, and the health bar system keeps each round tense without being frustrating. It is a well-crafted fan game that offers good replay value for rhythm game fans.

Description

Game Introduction

FNF Vs Oswald D-sides is a fan-made rhythm game inspired by the Friday Night Funkin series. In this online game, players take on the role of Boyfriend as he faces off against Oswald in a musical battle. The game features three unique D-sides songs: Despair, Despondency, and Untold Loneliness, each with its own mood and challenge. Players can choose between Story mode, which follows a narrative, or Free mode for quick practice. The goal is to hit the correct arrow keys as they appear on screen to keep your health bar full and reach the end of each song. This game is safe for all ages, with no violent or inappropriate content, making it a great choice for family-friendly fun.

How to Play

To play, use your keyboard arrow keys. When floating arrow symbols appear above Boyfriend, press the matching arrow key in time with the music. Each correct hit keeps your health bar steady, while missing multiple notes in a row will deplete it, causing you to lose the song. The game tracks your progress through each track, and you must complete all songs to win. In Story mode, you follow a sequence of songs, while Free mode lets you pick any track to practice. The key is to stay focused on the rhythm and react quickly to the on-screen prompts. No special equipment is needed, just a keyboard and a love for music games.

Game Features

Features include rhythm-based gameplay that tests your timing and coordination. Three D-sides songs offer varied musical experiences. Story mode provides a narrative progression, while Free mode allows for targeted practice. Simple keyboard controls make the game accessible to everyone. The game is playable online with no downloads required.

Tips for Success

Practice regularly to improve your timing and reaction speed. Start with Free mode to get comfortable with each song before attempting Story mode. Focus on the rhythm of the music rather than just the visual prompts, as this helps with consistency. Take breaks if you find yourself missing notes frequently, as fatigue can affect performance.

Compatibility

💻 Desktop | 📱 Mobile | 📟 Tablet

– All supported · Best with Chrome or Safari

FAQ

Is this game free to play?

Yes, FNF Vs Oswald D-sides is typically free to play online, as it is a fan-made game. Most Friday Night Funkin fan games are offered at no cost, though some may include optional donations or ads to support the creators.

Can I play this game on mobile devices?

The game is designed for keyboard controls, so it is best played on a computer or laptop. Some mobile browsers may support it with on-screen controls, but the experience is optimized for a physical keyboard.

Do I need to download anything to play?

No, the game is playable directly in your web browser without any downloads or installations. Simply visit the game page and start playing immediately.

Is there a way to save my progress?

Progress saving depends on the specific version of the game. Many online rhythm games use browser cookies or local storage to track progress, but this may not be available in all versions.

What happens if I miss too many notes?

If you miss multiple notes in a row, your health bar will decrease. When the health bar reaches zero, you lose the song and must restart from the beginning or the last checkpoint, depending on the mode.

Are there other characters besides Boyfriend and Oswald?

Based on the game name, the primary characters are Boyfriend and Oswald. Other characters are not mentioned, so the game likely focuses on this musical duel without additional opponents.