MH Multiverse

A desktop launcher and server management tool for MHServerEmu, the Marvel Heroes Omega server emulator. Built with Tauri 2, Svelte 5, and Rust.

Overview

MH Multiverse provides a single interface for launching Marvel Heroes Omega, managing a local MHServerEmu instance, and editing the server's data files. It handles process lifecycle, credential storage, config editing, live tuning, data patching, MTX store catalog editing, server updates, and backups.

The app is currently Windows-only and communicates with the server via stdin/stdout piping and direct file I/O against MHServerEmu's data directories.

Features

Game Launching

• Multi-server profile management with per-server credentials
• Encrypted password storage via OS keychain (Windows Credential Manager)
• Auto-login support - email and password passed as command-line arguments
• Configurable launch flags: skip startup movies, skip motion comics, no sound, client logging, custom resolution, robocopy, no-Steam mode

Local Server Management

• Start and stop MHServerEmu with stdout/stderr log streaming to an in-app console
• Structured log parsing (timestamp, level, category, message) with level-based colouring and filtering
• Interactive command input with autocomplete drawn from the MHServerEmu command list
• Timed shutdown with configurable delay and broadcast message
• Independent Apache start/stop for players running in offline mode without the reverse proxy
• Windows Job Object integration - child processes are killed automatically if MH Multiverse crashes or is force-closed

Server Configuration (INI Editor)

• Visual editor for MHServerEmu's Config.ini / ConfigOverride.ini with grouped sections, tooltips, and type-appropriate controls (toggles, dropdowns, numeric inputs)
• Diff-only saving - only values that differ from Config.ini defaults are written to ConfigOverride.ini
• Per-section reset to defaults
• Currently displays a subset of the full Config.ini options for simplicity, though more may be added in future

Live Tuning Editor

• Scan, create, edit, and toggle LiveTuningData*.json files in Data/Game/LiveTuning
• Enable/disable tuning files via OFF_ filename prefix convention
• Tag-based organisation (Core, Event, Custom) with favourites pinning
• Category-aware setting enum validation (Global, World Entity, Power, Region, Loot, etc.)
• Prototype path picker backed by Calligraphy.sip for prototype-scoped tuning entries

Data Patching Editor

• Scan, create, edit, and toggle PatchData*.json files in Data/Game/Patches
• Enable/disable patch files by moving between Patches/ and Patches/Off/
• Per-entry enable/disable, prototype path, field path, value type, and value editing
• Prototype picker and value type dropdown matching MHServerEmu's supported patch value types

MTX Store Catalog Editor

• Load, create, edit, and delete catalog entries across Catalog*.json files in Data/Game/MTXStore
• Non-destructive editing - saves always write to *MODIFIED.json sidecar files; base catalog files are never modified
• Automatic .bak snapshots before every write
• Prototype item picker with display name resolution (embedded + custom override maps)
• Type and modifier assignment matching MHServerEmu's catalog type system
• Bundle HTML page generation for in-game store display, with customisable CSS

Server Updates & Backups

• One-click update from MHServerEmu nightly builds (download, extract, install)
• Configurable backup targets (INI files, LiveTuning directory, account database, full Data directory)
• Automatic pre-update backup with post-update restore of user-modified files
• Manual backup creation, restore, and deletion with manifest tracking

Application Settings

• Game and server executable path configuration with file browser
• Five colour themes

Calligraphy.sip Integration

• Binary pak reader for Calligraphy.sip - parses blueprint and prototype directory records
• Prototype search by path and display name, filtered by category/blueprint
• Runtime prototype ID and GUID resolution for tuning, patching, and store editors
• Cached per server executable path, automatically rebuilds when the server changes

Installation

Prerequisites

• Node.js (LTS)
• Rust (stable, 1.77.2+)
• Tauri CLI prerequisites for your platform

Setup

npm install

Development

npm run tauri dev

Production Build

npm run tauri build

Type Checking

npm run check

Config File Location

%APPDATA%\com.mhmultiverse.app\multiverse.json

NOTE

MH Multiverse is an unsigned executable that starts other processes (e.g Marvel Heroes Omega, MHServerEmu) and creates, writes and reads files (e.g ConfigOverride.ini, Data Patching, Live Tuning). Like Bifrost, this may cause false positive detections from antivirus software. If this causes issues, with the prerequisites installed the source code can be built with just two commands.

Planned Updates

Aside from some upfront bug fixes and issue mitigation, I'll first be looking at updating the Live Tuning feature in response to the Event system update coming soon to MHServerEmu. I'm also looking to make the calligraphy.sip parsing smoother (and in particular less reliant on display_names.json for prototype ID -> display name replacement). If there's enough interest, I'll also look into Linux support.

Acknowledgements

A special thanks to all contributors of the MHServerEmu project for their tireless work in bringing Marvel Heroes Omega back to life.

Additionally, this project was inspired by the great work done in the following projects

• Crypto137: Bifrost
• Crypto137: MHServerEmu.Gui
• Crypto137: OpenCalligraphy
• mtzimas92: MHServerEmu-CatalogManager
• Pyrox37: MHServerEmuUI