Getting Started with Risk of Rain 2 Modding

Risk of Rain 2 modding uses the same r2modman + BepInEx stack as Valheim and Lethal Company. If you've modded any Thunderstore-aware game, this is the same flow.

Step 1 — Install r2modman

r2modman is the community Thunderstore mod manager. Pick Risk of Rain 2 as your target on first launch.

r2modman creates a profile for RoR2. Multiple profiles per game are supported (one for solo, one for each multiplayer group).

Step 2 — BepInEx auto-installs

r2modman prompts to install BepInEx on first profile setup. Accept. The loader is placed in RoR2's install directory.

Step 3 — Install R2API and your first mods

In r2modman's Online tab, search for:

R2API — the content framework. Most mods depend on it.
TILER2 or similar utility frameworks — common dependencies.

Plus three popular first content picks:

Phantom Survivors or another custom survivor pack.
MoreLobbyCount / IncreasedLobbySize — bump multiplayer player count.
DebugToolkit — developer/QoL console.

Click Download on each. r2modman resolves dependencies and installs.

Step 4 — Launch via r2modman

Click Start modded in r2modman. RoR2 launches with the profile's active mods.

Step 5 — Multiplayer

For mod-parity in multiplayer:

Host exports profile via r2modman's profile export → gets a code.
Shares code with friends.
Friends import the code into their r2modman.
Everyone launches the same profile.

Common gotchas

r2modman says BepInEx outdated. Re-run the BepInEx install. Usually after a RoR2 patch.
R2API missing. Most mods need it. Install first.
Multiplayer disconnects on join. Mod-set mismatch. Sync profiles.
DLC compatibility. Confirm mod compatibility with Survivors of the Void and Seekers of the Storm.

Same workflow as Valheim and Lethal Company. The skill transfers.