osu!

3 projects: source release, readable bytecode, agent environment.

Projects

osu!lazer (open-source C# client) + osu-framework

Source releaseC# .NET 8 / osu-framework (MIT); osu!stable is .NET Framework (obfusc…19,259 starspushed 2026-10-12MIT licenserelease 2026.1005.0-lazer

rhythm is just a *click* away!

GitHub

osu-reverse-engineering

Readable bytecodeILSpy (IL extraction), IDA annotation, CLR v4 in-process loader/plugi…5 starspushed 2026-07-15MIT license

Reverse-engineering notes, reproducible experiments, and original tooling for selected osu! rulesets.

RE notes + original tooling: readable.NET 8 parsers/planners per ruleset, in-process Player-mode agents for mania/taiko/catch; no game binaries included

osu-ai-bot (LSTM trained on human replays)

Agent environmentPython LSTM0 starspushed 2026-05-21no license

AI bot that learns to play osu! using LSTM trained on human replays. Predicts cursor positions in real-time via WebSocket.

GitHub

What you need

You need your own copy of the game: these projects ship code only.

Agent environments

hoanhngjp/osu-ai-bot

More on PC

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PCMindustrySource releaseAgent environment201929k2026-10-11 PCCommand & Conquer Remastered CollectionSource release202021k2025-01-16 PCRollerCoaster Tycoon 2ReimplementationAgent environment200216k2026-10-12 PCDune 2000Reimplementation199818k2026-10-11 PCAge of Empires IIReimplementation199914k2026-10-03 PCCataclysm: Dark Days AheadSource release201313k2026-10-12 PCCivilization VSource releaseReimplementation201011k2026-10-12 PCDiablo IISource releaseMatching decomp+2200011k2026-10-12

Found via ppy/osu-framework

GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.