Modrex

A desktop mod manager for PAYDAY 3, PAYDAY 2, PAYDAY: The Heist, and Crime Boss: Rockay City powered by modworkshop.

Installation

Platform	Download
Windows	Modrex.Setup.exe
Linux .deb	modrex.deb
Linux .rpm	modrex.rpm
Linux .AppImage	modrex.AppImage

Features

• Supports PAYDAY 3, PAYDAY 2, PAYDAY: The Heist, and Crime Boss: Rockay City, with a searchable game picker
• Browse and search mods from modworkshop
• In-app News tab with the latest posts for each game
• Full mod detail page: description, images, downloads, changelog, dependencies, and install instructions
• Rich description rendering: formatted text, tables, collapsible sections, colored text, and inline video embeds (YouTube, Streamable)
• One-click install, uninstall, enable, and disable for .pak, .zip, .7z, .rar, and .tar.gz/.tar.xz mods
• Organize mods into folders with arbitrary nesting depth and drag-and-drop reordering
• Mods with multiple installed files grouped as a single card, with per-file management
• Update detection with selective per-mod updates
• Launch modded or vanilla directly from the app
• Automatically detects your game installation (Steam, Epic Games Store, Xbox App)
• One-click install for mod loaders: SuperBLT (PD2), DAHM and PDTHModOverrides (PDTH), UE4SS (PD3, Crime Boss)
• Identifies manually placed mod files via SHA256 lookup against a live mod index
• Automatic update checks with one-click in-app updates

Requirements

Steam works on Windows and Linux for every supported game. Epic Games Store and Xbox App are Windows-only.

Game	Steam	Epic Games	Xbox App
PAYDAY 3
PAYDAY 2
PAYDAY: The Heist
Crime Boss: Rockay City

Troubleshooting

If something goes wrong, attach your log file to a bug report.

Platform	Path
Windows	%APPDATA%\Modrex\logs\modrex.log
Linux	~/.config/modrex/logs/modrex.log

Development

Command	Description
pnpm install	Install dependencies
pnpm dev	Start with hot reload
pnpm build	Production build
pnpm typecheck	Type-check renderer
pnpm format	Format all files with Prettier
pnpm lint	Lint renderer source
pnpm test	Run all tests (Rust + renderer)
pnpm generate-licenses	Regenerate THIRD_PARTY_LICENSES.md

Tech stack

Tauri v2 · React · Tailwind CSS · Lucide · TypeScript

License

Modrex is open source under the MIT License.