Main Chapters · Stage 18
Cats of the Cosmos Ch. 2 (Zombie) — Stage 18
シリウス
Cats of the Cosmos Ch. 2 (Zombie) — Stage 18 is a Battle Cats stage in Cats of the Cosmos Ch. 2 (Zombie). It costs 78 energy and sends 8 enemy spawn lines — led by Project A as the boss — against a 315,000 HP enemy base, and clearing it rewards 6,100 XP. Its enemies carry the Zombie, Alien and Behemoth traits, so cats that target them do the most work here.
Data updated: 2026-08-31
78Energy Cost
6,100XP Reward
315,000Enemy Base HP
5,500Stage Length
10Max Enemies
9.1Difficulty
Enemy spawns (8)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 Zroco | 300% | 10 | 10s | 23.3s~30s | 100% | — |
 Project A | 1100% | 1 | 13.3s | — | 100% | Boss |
 Cyberhorn | 600% | 1 | 30s | — | 100% | — |
 Zackie Peng | 300% | 1 | 43.3s | — | 100% | — |
 Formicidaean Ariant | 200% | 3 | 50s | 33.3s | 100% | — |
 Wild Doge | 100% | 5 | 50s | 13.3s~20s | 100% | — |
| Zroco | 300% | 7 | 100s | 6.7s~10s | 100% | — |
 Ms. Sign | 100% | ∞ | 900s | 900s | 100% | — |