Plasma Grenades (or "Sticky" Grenades) are constructed from the same materials as plasma mines. The grenade sticks to most surfaces and detonates on a fixed timer. Clever soldiers have landed them on Chimera who would return to cover near fellow units, and the detonation resulted in higher casualties. It has so far only appeared in Resistance: Retribution.
Surprisingly, the Plasma Grenade was designed by the Cloven, appearing as the first in-game appearance of a Cloven-originated weapon. Plasma Grenades is acquire by collecting all Secrets of the Maquis Intel hidden throughout the game. Plasma Grenades do more damage than any other grenades in Retribution.