Observed arrival · 2026-09-13

maimai.party: A Research Catalog for Rhythm-Game Charts

maimai.party Observed source

Editorial interest 86/100 Selection signal · not a rating of the site

An open-source browser for finding, filtering, comparing, and studying charts from the maimai arcade rhythm game.

Landing page captured for the 2026-09-13 issue.

Field notes

The catalog separates standard and DX formats and lets visitors narrow charts by version, difficulty, level range, genre, and traits. Its sorting controls include constant, BPM, inputs per second, and flow peak, while the comparison area is designed to find similar charts and prioritize measurements. The project also documents a chain of community tools and datasets, including MaichartConverter, MaiLib, Tachi aliases, and public simulator links; it explicitly distinguishes its MIT-licensed code from SEGA assets and third-party data.

Observed signals

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Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

◉HumanPersonal, local, civic, or handmade

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