rob-Regigigas icon


Adds a new boss to the game, Regigigas. Includes a playable version in config.

By rob
Last updated 6 months ago
Total downloads 50245
Total rating 16 
Categories Mods Player Characters Enemies
Dependency string rob-Regigigas-1.2.2
Dependants 15 other mods depend on this mod

This mod requires the following mods to function

bbepis-BepInExPack-5.3.1 icon

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

Preferred version: 5.3.1
tristanmcpherson-R2API-3.0.13 icon

A modding API for Risk of Rain 2

Preferred version: 3.0.13



  • Adds Regigigas, a powerful new boss that spawns on Siren's Call, Sundered Grove, and post-loop Titanic Plains, Abandoned Aqueduct, Wetland Aspect and Rallypoint Delta
  • Includes a playable version in config, disabled by default


Slow Start

For the first 2 minutes after spawning, attack speed, damage and movement speed are halved. Armor is doubled during this time.

Crush Grip

Grab a nearby enemy and crush them, dealing 50% of their max health, then throw them.

Earth Power

Stomp with all your might, summoning pillars of flame that deal 600% damage.

Revenge (usable below 50% hp)

Freeze up for 8 seconds, gaining 500 armor. At the end, release a massive blast for double the damage receieved during this time. Radius scales up with damage taken, up to a limit.


  • Needs lots of polish all around


YinDragon - Skill icons

Known Issues

  • Crush Grip may have issues when used by players online



  • Revenge armor buff now lasts until the attack actually goes off
  • Fixed weird Slow Start behavior in multiplayer


  • Slow Start is now a stacked debuff that goes down as you score kills
  • Fixed Slow Start not working in multiplayer


  • Slow Start for playable Regigigas reworked- now visualized as a debuff, and is removed after getting 10 kills
  • Now drops Pearls as its boss item
  • Regigigas now has a 1/8192 chance to spawn as a Shiny and drop a guaranteed Irradiant Pearl on death- chance is configurable
  • Base armor 40 > 20
  • Revenge base radius increased
  • Revenge base duration decreased
  • Revenge damage return 200% > 300%
  • Revenge postprocessing duration changed to match the channel duration
  • Ancient Power projectile speed increased
  • Reimplemented mastery skin achievement
  • Added a few more item displays
  • Fixed Giga Impact secondary explosion not doing damage
  • Fixed a bug causing players to get stuck forever if they killed Regigigas while they were grabbed


  • Fixed for latest RoR2 update
  • Updated camera stuff, Ancient Power now has a crosshair


  • Slow Start now doubles armor for the duration
  • Slow Start duration now scales down with level
  • Slow start now has a slight visual indicator when activated
  • Earth Power damage 1200% > 600%- now inflicts burn
  • Added new primary: Drain Punch
  • Added new experimental secondary: Ancient Power
  • Added new experimental special: Giga Impact
  • Added placeholder skill icons
  • Added area indicator for Revenge's radius
  • Revenge channel duration no longer scales with attack speed
  • Rebalanced base stats for survivor variant
  • Increased spawn weight in Sundered Grove to 2
  • Base armor 0 > 20
  • Fixed item displays
  • Fixed idle animation not looping after Slow Start had activated
  • Fixed aim animation being slightly off-center
  • Fixed Wax Quails not applying to jump
  • Fixed buggy jump animation
  • Fixed glow bugging out with multiple Regis on the map


  • Fixed to work on latest RoR2 version
  • Fixed a bug causing players to get stuck forever if they killed Regigigas during a grab
  • Increased Revenge radius


  • Fixed a bug causing Regigigas to never actually spawn as a boss


  • Base health 2100 > 4200
  • Base health per level 630 > 1260
  • Base armor 20 > 0
  • Added Mastery skin
  • Added a different set of animations for when Slow Start is finished
  • Added death animation
  • Added alt primary: Brick Break
  • Added some new sounds
  • Added new Earth Power visuals
  • Earth Power projectile count 5 > 14
  • Earth Power damage 900% > 1200%, no longer rotates or applies Cripple
  • Fixed oversized particles


  • Fixed playable Regigigas always being enabled


  • Fixed some networking issues
  • Moved up aim origin so projectiles don't come from his crotch
  • Crosshair is no longer hidden when Visions of Heresy is held
  • Added item display for Visions of Heresy


  • Initial Release

Available versions

Please note that the install buttons only work if you have compatible client software installed, such as the Thunderstore Mod Manager. Otherwise use the zip download links instead.

Upload date Version number Downloads Download link  
2021-4-22 1.2.2 28636 Version 1.2.2 Install
2021-4-21 1.2.1 872 Version 1.2.1 Install
2021-4-18 1.2.0 3112 Version 1.2.0 Install
2021-4-13 1.1.1 3568 Version 1.1.1 Install
2021-4-9 1.1.0 2248 Version 1.1.0 Install
2021-4-4 1.0.5 3263 Version 1.0.5 Install
2021-3-9 1.0.4 5611 Version 1.0.4 Install
2021-3-7 1.0.3 1506 Version 1.0.3 Install
2021-3-6 1.0.2 650 Version 1.0.2 Install
2021-3-6 1.0.1 78 Version 1.0.1 Install
2021-3-6 1.0.0 701 Version 1.0.0 Install