Special Stages · Stage 1
Puffer Planet (Merciless)
リバーピッグプラネット 超極ムズ
Puffer Planet (Merciless) is a Battle Cats stage in Blue Impact. It costs 200 energy and sends 8 enemy spawn lines — led by Puffsley's Comet as the boss — against a 999,999 HP enemy base, and clearing it rewards 17,860 XP. Its enemies carry the Alien trait, so cats that target it do the most work here.
Data updated: 2026-08-31
200Energy Cost
17,860XP Reward
999,999Enemy Base HP
5,000Stage Length
12Max Enemies
9.3Difficulty
Enemy spawns (8)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 Puffsley's Comet | 100% | 1 | 20s | — | 100% | Boss |
 Corporal Weyland | 2400% | 3 | 50s | 40s~50s | 100% | — |
 Project A | 2400% | 1 | 80s | — | 100% | — |
 Star Peng | 2400% | 4 | 26.7s | 16.7s~20s | 100% | — |
| Star Peng | 2400% | 4 | 100s | 13.3s~16.7s | 100% | — |
| Star Peng | 2400% | 4 | 160s | 10s~13.3s | 100% | — |
| Star Peng | 2400% | ∞ | 206.7s | 40s~50s | 100% | — |
 Ms. Sign | 100% | ∞ | 900s | 900s | 100% | — |