StarRailExpress ModPack
Java modpack listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on Modrinth
🚂 Introduction
StarRailExpress is an expansion pack for Train Murder Mystery, developed by our Catmoon Team. It greatly enriches the base game with new roles, modifiers, maps, modes, and gameplay mechanics.
- Maps – 16 maps in total, including 5 classic train-themed maps, plus many others with unique map-specific mechanics.
- Roles & Modifiers – Includes content from StupidExpress, Noellesroles, Harpy Simple Roles, and some from KinsWathe, along with many original roles we have designed ourselves.
- Game Modes – In addition to the traditional murder mode, we have added a variety of fun casual modes.
This pack is designed for multiplayer sessions of 6 to 42 players (or even more!). By default, at least 6 players are required to start a game. Neutral roles are only enabled when there are 10 or more players, and certain roles have special spawn conditions based on player count or map.
🌏 Language Support
Our mod currently supports the following languages:
| Language | Native Name | Support Status | Accepting PRs? |
|---|---|---|---|
| Simplified Chinese (UI) | 简体中文 | ✅ Native | ❌ No |
| Traditional Chinese (UI) | 繁體中文 | ⚠️ Machine-translated (needs review) | ✅ Yes |
| English (UI) | English | ⚠️ AI-translated (needs review) | ✅ Yes |
Important Note: The built-in game map is provided in Simplified Chinese only. However, you are free to create your own custom maps using the map-making tool available in the admin creative tab.
If you'd like to help improve our translations or add support for additional languages, we welcome your contributions via pull requests:
https://github.com/catmoon-train/StarRailExpress/pulls
✨ Optimized Features
We have placed great emphasis on player guidance, making it easy for newcomers to get started.
- Objective Point Compass (B key) – Shows the locations of all objective points on the map.
- Role Introduction (U key) – Press U at any time (even outside a game) to open the role guide. During a game, it automatically jumps to your current role's introduction.
- In‑Inventory Quick Guide – When you open your inventory, a simplified introduction to your current role appears in the top‑left corner.
- Map Introduction (Comma key) – View map details and learn about special mechanics. You can also explore maps freely using the Map Browsing Mode (
sre:discovery). - Post‑Match Replay – Clearly see what each player did during the game after it ends.
- Improved Results Screen – Winning players are highlighted, and neutral roles are displayed in a separate category.
🧩 More Content
For full details, please visit the StarRailExpress page on Modrinth.
💻 Commands Overview
| Command | Description |
|---|---|
/listRoles |
View and disable roles / modifiers. |
/tmm:switchmap |
Choose a map to play (also available via lobby signs). |
/tmm:start |
Select a game mode and start (lobby signs also provide quick start). |
/tmm:stop |
Force‑end the current game. |
/setRoleCount |
Set the number of killers, sheriffs, or neutrals. (Neutral count can only be configured with at least 10 players; this setting is in the mod configuration.) |
/sre:help |
Show command help information. |
🛠️ Author Team
- Original Train Murder Mystery Author: RAT
- Integration Pack Author: Catmoon Team
- Code: canyuesama, wifi_left, haiman233, mifan520, xiao_hei_hand, ForsakenLove516
- Artists: 伏见绀, mifan520
- Maps: allinTOKYO, Otith, 漓清, 落叶若水, haiman233, wifi_left, BackVoice0
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Downloads as StarRailHarpyExpress V4.3.5_for_mr.mrpack
- Download size: 167.2 MB
- Download link checked 8 Oct 2026 — working
These come from our own check of the pack file, not from the source page.