Main Chapters · Stage 45
N77 Nebula
N77星雲
N77 Nebula is a Battle Cats stage in Cats of the Cosmos Ch. 2. It costs 87 energy and sends 11 enemy spawn lines — led by Project A as the boss — against a 590,000 HP enemy base, and clearing it rewards 14,200 XP. Its enemies carry the Alien and Metal traits, so cats that target them do the most work here.
Data updated: 2026-08-31
87Energy Cost
14,200XP Reward
590,000Enemy Base HP
4,000Stage Length
20Max Enemies
8.4Difficulty
Enemy spawns (11)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 Those Guys | 3000% | ∞ | 1.3s | 13.3s~16.7s | 100% | — |
 Squire Rel | 3000% | ∞ | 3.3s | 13.3s~16.7s | 100% | — |
 UltraBaaBaa | 100% | 3 | 5.3s | 26.7s~36.7s | 100% | — |
 Metal Doge | 200% | 5 | 6.7s | 26.7s~40s | 100% | — |
 Metal Hippoe | 200% | 2 | 1s | 4s~5.3s | 100% | — |
 Metal One Horn | 200% | 1 | 40s | — | 100% | — |
 Project A | 300% | 1 | 46.7s | — | 100% | Boss |
 Kroxo | 1350% | 3 | 50s | 10s~23.3s | 100% | — |
| Metal Hippoe | 200% | 1 | 63.3s | — | 100% | — |
| Metal Hippoe | 200% | 1 | 66.7s | — | 100% | — |
 Ms. Sign | 100% | ∞ | 900s | 900s | 100% | — |