The open-source mod manager for Risk of Rain 2 and hundreds of other BepInEx games
r2modman is a fast, safe, and flexible mod manager. One-click installs from Thunderstore, automatic dependency resolution, profiles for every playstyle, and native builds for Windows and Linux. Always free, always open.
Why r2modman
Every feature you need to mod confidently — with none of the manual folder juggling.
One-click installs
Pulls directly from Thunderstore. Pick a mod, hit install, and r2modman handles the files, loader setup, and load order.
Automatic updates
Keep every mod on the latest compatible version without chasing downloads. r2modman alerts you when updates ship.
Profile management
Swap between vanilla, multiplayer, and heavily-modded setups instantly. Export/import profile codes to share with friends.
Dependency resolver
Pulls in every required dependency (BepInEx, MelonLoader, Shimloader, UE4SS…) so mods never crash on missing files.
Conflict handling
Detects mod conflicts and load-order problems before they brick your game. Safe enable/disable and one-click uninstall.
Cross-game support
Risk of Rain 2, Valheim, Lethal Company, Content Warning, BONELAB, Ultrakill, and 170+ more titles — all from one app.
Download r2modman 3.2.15
Grab the build for your platform. Windows and Linux binaries are served straight from GitHub Releases — no mirrors, no re-hosting.
Prefer to check the source? All builds live on GitHub Releases. macOS is not officially supported.
How to install r2modman
Six steps from zero to modded. No manual file copying, no registry edits.
Download the build
Grab the installer for your OS from the Download section above (or straight from GitHub Releases).
Run the installer
On Windows, run r2modman-Setup-3.2.15.exe. On Linux, make the AppImage executable (chmod +x) and double-click, or install the .deb/.rpm via your package manager.
Select your game
Launch r2modman and pick your game from the list — Risk of Rain 2, Valheim, Lethal Company, Content Warning, and hundreds more.
Create a profile
Start with a default profile, then create dedicated ones for multiplayer, streaming, or specific mod packs. Switch at any time.
Browse and install mods
Open the Thunderstore browser inside r2modman. One click installs the mod plus every dependency it needs.
Launch your game
Hit Start Modded and r2modman boots the game with BepInEx (or the right loader) and your selected mods active.
Frequently asked questions
Quick answers — full list on the FAQ page.
Is r2modman safe to use?
Yes. r2modman is fully open-source (ebkr/r2modmanPlus on GitHub) and widely trusted by the Risk of Rain 2 and Thunderstore communities. It only installs mods from Thunderstore, a reputable curated mod repository. Always download r2modman itself from the official GitHub releases (or this page, which links straight to them).
Do I need to install BepInEx separately?
No. r2modman automatically installs BepInEx (or the appropriate loader — MelonLoader, Northstar, Shimloader, UE4SS, etc.) for whichever supported game you select. Manual setup is only needed in unusual cases.
Does r2modman work on Linux?
Yes. Native Linux builds are provided as AppImage, .deb, .rpm, .pacman, Flatpak, and tar.gz. Proton support for Windows-only games has also improved significantly — WINEDLLOVERRIDES automation was re-added in v3.2.13 and UMM issues on native Linux / Proton were fixed in v3.2.14.
Will r2modman affect online multiplayer?
Some mods may break or be disallowed in multiplayer. r2modman's profile system lets you keep a clean vanilla profile alongside your modded profile — so you can switch between them for online play. Always check each game's own rules before using mods online.