KomradeSpectre-Aetherium icon


A mod that currently adds 13 varied items to Risk of Rain 2 and now fully customizable with configs! Major visual update!

Last updated a day ago
Total downloads 81123
Total rating 27 
Categories Items
Dependency string KomradeSpectre-Aetherium-0.5.2
Dependants 41 other mods depend on this mod

This mod requires the following mods to function

bbepis-BepInExPack-5.4.9 icon

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

Preferred version: 5.4.9
tristanmcpherson-R2API-3.0.13 icon

A modding API for Risk of Rain 2

Preferred version: 3.0.13


What is Aetherium?

Aetherium is a mod for Risk of Rain 2 that adds in a few items of varying tiers.
Most of the item ideas listed were sourced from the ideas channel on the official discord,
and as such the ones that were I will list the person that came up with the idea next to them.

Discord: https://www.discord.gg/WNap5qcPf6

Items (so far):

Icon Item Description Rarity Original Idea by
Feathered Plume Gain a temporary 7% speed boost upon taking damage that stacks 3 times for 5 seconds. (+3 stacks and +0.5 second duration per additional Feathered Plume.) White Ajarl
Blood Soaked Shield Killing an enemy restores 10% max shield (+10% per stack hyperbolically.) The first of the stack of this item will grant 8% of your max health as shield on pickup. Green Kaboose
Shark Teeth 25% of damage taken (+25% per stack hyperbolically) is distributed to you over 5 seconds as bleed damage. Green FancyFrenc
Shielding Core You gain 10 (+5 per stack) armor while BLUE shields are active. The first stack of this item will grant 4% of your max health as shield on pickup. Green NepNep
Blaster Sword At full health, most attacks will fire out a sword beam that has 200% of your damage (+50% per stack) when it explodes after having impaled an enemy for a short duration. Red Bord
Inspiring Drone Any bots you own gain a 50% boost to each of its stats based on yours (+50% per stack). Some bots gain more ammo for their attacks based on the bonus to their attack speed, and have their ammo replenished twice as fast per additional Inspiring Drone. Finally, if an inspired bot is too far away from you, it is teleported to you after a delay (40 seconds for Turrets, 30 seconds for Drones). Red Kaboose (original) Me (modification)
Witches Ring Hits that deal 500% damage or more will trigger On Kill effects. Upon success, the target hit is granted immunity to this effect for 5 seconds (-10% duration per stack, hyperbolically.) Red Me
Accursed Potion Every 30 seconds (reduced by 25% per stack) you are forced to drink a strange potion, sharing its effects with enemies in a 20m radius (+5m per stack) around you. Max: 8 buffs or debuffs can be applied at any time. Lunar Shadokuro
Alien Magnet Enemies hit by your attacks will be pulled towards you, starting at 6x force (+1 force multiplier, up to 10x total force. The effect is more noticeable on higher health enemies. Lunar Me
Heart of the Void On death, cause a void implosion with a radius of 15m (+7.5m per stack) that revives you if an enemy is killed by it BUT at 30% health (+5% per stack, max 99%) or lower, all kinds of healing are converted to damage. Lunar Hyperion_21
Unstable Design Every 30 seconds you are compelled to create a very 'FRIENDLY' Lunar Chimera, if one of your creations does not already exist. It has a 400% base damage boost (+100% per stack), a 10% base HP boost (+10% per stack), a 300% base attack speed boost, and finally a 24% base movement speed boost (+24% per stack). This monstrosity can level up from kills. Lunar SpookyBoogie
Weighted Anklet A collection of weights will slow your attack speed by 10% (to a minimum of 10% total) and your movement speed by 10% (to a minimum of 10% total). If you find a way to remove them, you are granted 0.25 attack speed flat scaling, 1 movement speed flat scaling, and 5% damage per removal. Additionally, removing an anklet grants you a stack of Limiter Release Dodge. Dodge will allow you to dodge one overlap, or blast attack before depleting. Once all stacks of dodge are depleted, they will need to recharge (10 seconds for the first stack, 5 seconds per each additional stack) before fully replenishing. Lunar Me

Equipment (so far):

Icon Equipment Description Type Original Idea by
Jar of Reshaping On activation, absorb projectiles in a 20m radius for 3 second(s). Upon success, fire all of the projectiles out of the jar upon next activation. The damage traits of each projectiles fired from the jar depends on the bullets you absorbed. After all the projectiles have been fired from the jar, it will need to cool down. Normal Me


  • Version 0.6.0 or 0.7.0 will include a new survivor, we're building up to that.

  • Make Unstable Design's spawn behavior configurable between individual per player or similar to halcyon seed.

  • Will be adding more custom VFX/SFX to the Jar of Reshaping now that I'm more familiar with effect networking.


+ Added more visual touches to items in the mod.
+ Added a Cinematic Heart of the Void revival.
+ Added ItemDisplayRules for Bandit.
+ Updated to make everything work for post-anniversary update changes.
+ Added Knockback Resistance back to the Weighted Anklet, this goes away when you remove them and get a limiter release instead.
+ Other changes that I forgot to document.

+ Massive visuals update for the mod. Can't list every change here, but I have converted a great deal of it to the Hopoo Games shader and redesigned the look of some items.
+ Added some nice particle effects for a few items.
+ Weighted Anklet Redux: The previously worthless Lunar is probably now one of my strongest items.
+ Added an alternate model for the Blaster Sword. I based it loosely off of Kusanagi-no-Tsurugi.
+ Added a config to turn Inspiring Drone into a Green instead of a Red. Icon and all.
+ Made Unstable Design give half of gold and xp from its kills to its user. It gains the full value of both, but directly this time instead of pumping it into the Neutral team.
+ Fixed Blaster Sword dealing 2x the damage it should.
+ Buffed Shielding Core's default first armor stack to be 15, with additional stacks giving 10.
+ Buffed Shielding Core's base shield grant to be 8 percent, as opposed to 4 percent.
- Removed the DOT from Blaster Sword's projectile. It wasn't supposed to be there in the first place.
- Removed the knockback reduction from Weighted Anklet for the redesign.

+ GRRRR, thunderstore markdown.

+ Added configs to enable/disable items and equipment.
+ Added configs to allow blacklisting items so AI may never use/acquire them.
+ Retouched icons for buffs.
+ Made this readme more legible.
+ Made preparations for Pheromone Sac (0.5.0), will be releasing with another item.
- Removed obscure feature.

+ Another hotfix. Forgot to set the correct access level on some classes. It's fixed now, this should be the last hotfix, next update should be more items.

+ Quick hotfix to address R2API weirdness due to previously using the experimental build. Woopsies!

+ AETHERIUM REWRITE. Lots of refactoring had to be done, but now my process of item creation should be the default R2API way to do it. This means others can probably learn from it easier now.
+ Nerfed Shark Teeth default # of ticks value from 10 to 5 (As a result, it has more damage per these ticks vs Before.) Suggestion by Breadguy.
+ Nerfed Alien Magnet default starting force 6->3, force per stack 1->2 (To make it worth picking up more than one.) Suggestion by Breadguy.
+ Fixed Alien Magnet's force calculations to now work properly on things without a character motor. (Thanks to Chen for this)
+ Assorted fixes for Inspiring Drone and Unstable Design. (Thanks to Chen for this)
+ Added Texture to Shark Teeth.
+ Added an animation to Alien Magnet.
+ Made Alien Magnet use the ItemFollower system.
+ Retouched Icons, still working on these as development goes on.
+ Made the non-impale Blaster Sword projectile speeeeeeeeeeeeeeeeeeeen.
- Removed TILER2 dependency, migrated to my own ItemBase now.

Special Thanks

ThinkInvis - I learned a whole lot of things from their Classic Items mod. Thanks to them for authorizing me to use TILER2's stathooks in my itembase, it was integral in getting it off the ground.
Chen - Fixed turrets teleporting into the ground with Inspiring Drone. Provided me a snazzy build event to let me test things faster now. Put in a ton of work to highly improve the Inspiring Drone's code as well, can't thank them enough for it.
KingEnderBrine - Helping out with some questions regarding Item Displays, and providing a useful helper mod to speed up my IDRS creation.
Harb - For providing the ILHook from their HarbCrate mod, which allows Bloodsoaked Shield and Shielding Core to be able to provide some base shields, and also providing a reflection autodiscovery feature for my items and equipment.
RyanP - We reference his void implosion (from his Flood Warning warden elites) as basis for our void implosion, albeit modified a bit to work for our item.
Rob - For varied questions relating to coding on ROR2. Also for helping solve some issues regarding ItemDisplay rendering.
OkIGotIt (referencing Rico) - For providing a code snippet for ItemDisplays which let me learn how to have them show up in the first place.
Rico - For the above, and for creating a timer component for me to fix an annoying Voidheart issue that I couldn't solve.
Rolo - For providing a projectile code example, which allowed us to use it as a basis to create Blaster Sword with heavy modifications.
BordListian - Basically co-dev support in creating this and playtesting.
GrimTheWanderer - Playtesting.
WaltzingPhantom - For providing alternative icon art for Feathered Plume, Blood Soaked Shield, Shark Teeth, and Shielding Core!
Various ROR2 Modding Core Developers and Modders - Answering questions related to modding for ROR2 at random stages during development of version 0.1.0.
753 - Providing a crystallization shader for me to use in the future.
Lorc (Https://lorcblog.blogspot.com/) - For the base feather icon I did a small edit to for Feathered Plume's speed buff.
FilterForge (Https://www.filterforge.com/) - For providing a good deal of the base for my normals. Awesome plugin library, I recommend it.

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  
2021-4-13 0.5.2 1676 Version 0.5.2 Install
2021-1-30 0.5.1 25189 Version 0.5.1 Install
2021-1-30 0.5.0 51 Version 0.5.0 Install
2020-12-28 0.4.7 13801 Version 0.4.7 Install
2020-12-28 0.4.6 39 Version 0.4.6 Install
2020-12-12 0.4.5 5790 Version 0.4.5 Install
2020-12-12 0.4.4 72 Version 0.4.4 Install
2020-12-12 0.4.3 51 Version 0.4.3 Install
2020-10-27 0.4.2 10710 Version 0.4.2 Install
2020-10-24 0.4.1 2243 Version 0.4.1 Install
2020-10-24 0.4.0 738 Version 0.4.0 Install
2020-10-16 0.3.1 2774 Version 0.3.1 Install
2020-10-15 0.3.0 669 Version 0.3.0 Install
2020-10-8 0.2.0 3339 Version 0.2.0 Install
2020-10-5 0.1.51 1586 Version 0.1.51 Install
2020-10-8 0.1.6 68 Version 0.1.6 Install
2020-10-4 0.1.5 483 Version 0.1.5 Install
2020-9-26 0.1.4 2847 Version 0.1.4 Install
2020-9-22 0.1.3 1998 Version 0.1.3 Install
2020-9-21 0.1.2 4528 Version 0.1.2 Install
2020-9-19 0.1.1 1654 Version 0.1.1 Install
2020-9-18 0.1.0 817 Version 0.1.0 Install