Special Stages · Stage 5
Whose Ball is This?
これは何組の玉ですか
Whose Ball is This? is a Battle Cats stage in River City Ball-Rolling. It costs 180 energy and sends 8 enemy spawn lines — led by Large Red Ball as the boss — against a 120,000 HP enemy base, and clearing it rewards 47,000 XP. Its enemies carry the Metal and Red traits, so cats that target them do the most work here.
Data updated: 2026-08-31
180Energy Cost
47,000XP Reward
120,000Enemy Base HP
4,500Stage Length
15Max Enemies
5.2Difficulty
Enemy spawns (8)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 Large Iron Ball | 150% | 1 | 13.3s | — | 100% | — |
 Large White Ball | 6000% | 1 | 26.7s | — | 100% | — |
 Large Red Ball | 600% | 1 | 40s | — | 100% | — |
| Large White Ball | 6000% | 7 | 0s | 13.3s~16.7s | 99% | — |
| Large Red Ball | 600% | 5 | 0s | 20s~23.3s | 99% | — |
| Large Iron Ball | 150% | 3 | 0s | 26.7s~30s | 99% | — |
| Large Red Ball | 1% | 1 | 0s | — | 99% | Boss |
 Ms. Sign | 100% | ∞ | 900s | 900s | 100% | — |