* seed: IIDX INFINITAS LEGG UPDATE H1 2026 This seed including March / June 2026 updates total 14 charts per play styles. March: https://p.eagate.573.jp/game/infinitas/2/event/ev2603.html July: beatmania IIDX INFINITASの楽曲公開についてご案内いたします。 2025年06月25日(木) 10時より以下の楽曲が公開となります。 ■LEGGENADARIA譜面の追加 ・GIGANT ・MAD ATTACK ・GUILTY ・REVOLVER * including July 2026 update too. beatmania IIDX INFINITASの楽曲公開についてご案内いたします。 2026年7月1日(水) 10時より以下の楽曲が公開となります。 ■BITで解禁可能楽曲の追加 ・惑星☆ロリポップ ・[ ]DENTITY * including BPLS4/S5 song pack songID chartID on SP and DP will do later * BPLS4/5 song pack chart-iidx-sp dp tomorrow. it's take me too long to finish. * BPLS4/5 song pack chart-iidx-dp * fix typo
Tachi
This is the main monorepo for Tachi.
What is Tachi?
Tachi is a modern, powerful, modular Rhythm Game Score Tracker.
In short, it does the things that people would otherwise make spreadsheets for.
Tachi is a score tracker and analyser for various rhythm games. It was designed out of a dislike for existing websites that display your scores. I think that scores are integral to the rhythm game experience, and that displaying them properly is just as important!
By using Tachi, you get access to powerful, novel rhythm game score-tracking features, like automatically breaking your scores into sessions, setting goals and rivals, and more!
Full database dumps for Tachi are published semi-regularly (when I remember to); see tachi-datasets.
Quick Setup For Experienced Programmers
- Open
Tachiin VSCode or Cursor. - Other editors can be used, but you will need to set up devcontainers yourself.
- Install the
Dev Containersextension - Run
Dev Container: Rebuild and Open in Container - (It can take a couple minutes to build and bootstrap)
- You should be placed inside a vscode instance called
Tachi (dev-container) - Inside there, you'll have a perfectly set up shell with fancy utils and fancy graphics. Use
just startto start Tachi, useseedsto run seeds scripts, etc.
Doing Tachi dev outside of the devcontainer is unsupported. The container is set up perfectly with the right versions of everything and is the expected way to do things. Please do not report bugs in the local setup if you are not using the devcontainer.
Loading data
If you want to load real data into localdev, use just db-load-dataset to interactively
load real datasets from the tachi-datasets.
Repository Info
This monorepo contains the following codebases:
typescript/client/, Which is a React frontend for Tachi. (AGPL3)
The client and the server are fairly decoupled. Someone could trivially create their own frontend client for Tachi.
typescript/server/, Which is an Express-Typescript backend for Tachi. (AGPL3)
This contains all of our API calls, and interfaces with our database, and powers the actual score import engine.
seeds/, Which is a git-tracked set of data to be synced with Tachi. (unlicense)
This is the source of truth for the songs, charts, and more on the site! By submitting PRs to this, you can fix bugs on the website, add new charts, and more.
-
typescript/bot/, Which is a discord bot frontend for Tachi. (MIT) -
typescript/common/, Which contains common types, utils and functions shared between all other packages. (MIT)
This is also published to NPM when it hits production.
-
docs/, Which contains Tachi documentation. (MIT) -
typescript/sieglinde/, Which contains our BMS/PMS analysis functions. (MIT) -
java/beatoraja-ir/, Which is the Tachi Internet Ranking implementation for the LR2oraja variant of beatoraja. (MIT)

