tristanmcpherson-R2API icon


A modding API for Risk of Rain 2

Last updated a month ago
Total downloads 420990
Total rating 125 
Dependency string tristanmcpherson-R2API-2.4.29
Dependants 299 other mods depend on this mod

This mod requires the following mods to function

bbepis-BepInExPack-3.0.0 icon

Unified BepInEx all-in-one modding pack - plugin framework, detour library

Preferred version: 3.0.0

R2API – a modding API for Risk of Rain 2

Build Status


R2API is a modding framework for other mods to work in, providing centralized and simplified APIs for Risk of Rain 2. This helps keeping mods compatible with each other.

At it's core, R2API should not change how the game behaves without any other mod installed. The only change is to keep mods out of quickplay and prismatic trials by request of the Hopoo Games team.


The contents of R2API should be extracted into the BepInEx folder, such that the files inside the monomod folder in the zip sit in the monomod folder in BepInEx and the files and folder in plugins in the archive is inside your plugins folder.

A succesful installation should look like this:
(click to enlarge)


A lot of documentation is in the included xmldocs, and further information may be on the dedicated R2API wiki. Do not hestiate to ask in the modding discord too!

Bleeding Edge

Unless you are a mod developer, you won't need this.

Want to get the latest versions of R2API? The latest bleeding edge builds of master are hosted on Azure, and may be downloaded using the Artifacts drop down menu.

Note that such builds may be unstable.


The most recent changelog can always be found on the Github. In this readme, only the most recent minor version will have a changelog.








2.3.7 * Fix issue with Twisted Scavengers loot



Available versions

Please note that the install buttons only work if you have compatible client software installed. Otherwise use the zip download links instead.

Upload date Version number Downloads Download link  
2020-7-6 2.4.29 40096 Install
2020-4-23 2.4.21 55785 Install
2020-4-3 2.4.10 48304 Install
2020-3-16 2.4.2 22945 Install
2020-3-16 2.4.1 461 Install
2020-1-26 2.3.22 42260 Install
2020-1-11 2.3.20 17731 Install
2020-1-9 2.3.17 2496 Install
2020-1-26 2.3.14 122 Install
2019-12-21 2.3.7 36073 Install
2019-12-19 2.3.5 9470 Install
2019-11-14 2.3.0 13511 Install
2019-11-14 2.2.54 319 Install
2019-10-15 2.2.32 15267 Install
2019-9-19 2.1.16 32992 Install
2019-8-12 2.1.15 19394 Install
2019-7-7 2.1.0 22967 Install
2019-5-29 2.0.10 30566 Install
2019-5-24 2.0.8 4103 Install
2019-5-22 2.0.6 2419 Install
2019-5-22 2.0.5 1597 Install