The ROIU Enemy Units
Meet the enemy units
Enemy units are not controllable — they are community threats. Every member can spend Passive ROIP to eliminate them for Elimination Score, salvage, and Leaderboard+ rank.

EnemyVROI
Virus ROI Unit
Enemy unit. 100 of each strain spawn daily — eliminate them for Elimination Score and salvage.
- Eliminate one VROI for 0.39 / 0.66 / 0.93 / 1.20 Passive ROIP (Type I / II / III / IIII).
- Each kill awards 1 / 2 / 3 / 4 Elimination Score, counted on Leaderboard+ together with ZROI.
- Every kill can drop salvage — Metal, Alloy or Data Core — at the same rates as ZROI.
EnemyZROI
Zombie ROI Unit
Enemy unit. Bites your ROI Units and multiplies daily until eliminated.
- Attack costs 10 Passive ROIP per click, deals 10 damage.
- Land the killing blow to eliminate the outbreak. A fresh 1 × 100/100 zombie spawns at the next daily execution.
- If nobody attacks for 4 consecutive days once capped at 8, multiplication pauses until someone attacks again.