osu beatmap Editor

osu! Beatmap Editor: Create Custom Rhythm Game Maps Online

This osu! Beatmap Editor provides a specialized browser-based platform for creating and testing custom beatmaps for rhythm games. Designed as an accessible proof-of-concept project, it delivers essential editing functionalities that allow music game enthusiasts to craft personalized maps directly in their web browser without requiring the full osu! client installation.

Core Editing Features and Functionality

The editor includes adjustable music timing with precise offset controls using the '-' and '=' keys, offering 0.01-second increment adjustments for perfect synchronization. It supports complete import/export capabilities, enabling users to bring existing '.osu' files into the editor or export finished creations for use in official osu! clients. A unique Easter egg animation, accessible through the Help menu's About tab, adds creative flair to the user experience.

Practical Workflow and Usage Instructions

Begin by erasing the example beatmap (untimed for this specific editor environment)
Use View → Info for detailed project information
Import files via File → Import from file
Export creations through File → Export as osu! btmp
Adjust music offsets with '-'/'=' keys for precise timing

Connected Game Mode Versions

The editor connects to multiple osu! game mode implementations: • Standard mode version • Taiko drum mode • Catch the Beat mode • Additional editing-focused versions

While functional for beatmap creation, the developer notes that the official osu! editor may offer more comprehensive features for serious mapping projects. Created with community tools like Inkscape and Movavi, this project represents an accessible entry point for aspiring beatmap designers to experiment with rhythm game content creation in a browser-based environment.