Void item (purple). What the game says, what it really does, what each copy adds and what it pairs with.

Plasma Shrimp
Void item (purple)
Gives you a small shield and, while it is up, every hit fires a missile. Turns your AtG Missiles into this. Each extra shrimp, stronger missiles.
Game text: «Gain a shield equal to 10% of your maximum health. While you have a shield, hitting an enemy fires a missile that deals 40% (+50% per stack) TOTAL damage. Corrupts all AtG Missile Mk. 1s.»
Stacking: Each shrimp raises missile damage (the game's +50% is not accurate).
Watch out: The shield depends on your max health: Shaped Glass shrinks it.
It is the void version of AtG Missile Mk. 1: pick it up and every copy of that item turns into this one.
| 1 copy | 2 copies | 3 copies | 5 copies | 10 copies |
|---|---|---|---|---|
| +40% | +90% | +140% | +240% | +490% |
Each copy adds the same.
you always have shield: missiles on every hit.
more shield to keep up.
a missile per bullet.
Found in Void Cradles, Encrusted Key caches, the Simulacrum and Void Locus. Never from a normal chest.
Unlocked from the start: it can show up in any run.
Gives you a small shield and, while it is up, every hit fires a missile. Turns your AtG Missiles into this. Each extra shrimp, stronger missiles.
Stacking: Each shrimp raises missile damage (the game's +50% is not accurate).Watch out: The shield depends on your max health: Shaped Glass shrinks it.
Found in Void Cradles, Encrusted Key caches, the Simulacrum and Void Locus. Never from a normal chest. Unlocked from the start: it can show up in any run.
Sources: the game's English text (name and description), the Risk of Rain 2 wiki (riskofrain2.wiki.gg: this item's page, read on 31 October 2026; numbers, stacking formula and notes) and the wiki's survivor pages. The plain-words text and the synergies are ours. Icons: Risk of Rain 2 (Hopoo Games / Gearbox).