Stories of Legend · Stage 3
Underground Base
地下制御室
Underground Base is a Battle Cats stage in Alcatraz. It costs 110 energy and sends 12 enemy spawn lines against a 340,000 HP enemy base, and clearing it rewards 88,407 XP. Its enemies carry the Floating trait, so cats that target it do the most work here.
Data updated: 2026-08-31
110Energy Cost
88,407XP Reward
340,000Enemy Base HP
4,500Stage Length
6Max Enemies
6.2Difficulty
Enemy spawns (12)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 Owlbrow | 400% | ∞ | 40s | 33.3s | 100% | — |
| Owlbrow | 400% | ∞ | 40.7s | 33.3s | 100% | — |
| Owlbrow | 400% | ∞ | 41.3s | 33.3s | 100% | — |
 Le'boin | 2000% | ∞ | 43.3s | 53.3s~66.7s | 100% | — |
 Squire Rel | 3000% | ∞ | 6.7s | 0.7s~2s | 100% | — |
| Squire Rel | 3000% | 30 | 6.7s | 0.1s~2s | 100% | — |
| Le'boin | 2000% | 1 | 0s | — | 100% | — |
| Le'boin | 2000% | 1 | 2s | — | 100% | — |
| Le'boin | 2000% | 1 | 4s | — | 100% | — |
| Squire Rel | 3000% | 3 | 0s | 0.1s | 100% | — |
| Owlbrow | 400% | 3 | 40s | 40s | 99% | — |
 Ms. Sign | 1600% | ∞ | 900s | 900s | 100% | — |