Regular Event Stages · River City Ball-Rolling · 6/8
Energy180
Clear XP5,400
Base HP180,000
Map length6,000
Max enemies12
Spawn interval0.03s
Enemy traits 
Metal 
Red 
Traitless
Metal Red Traitless Crown difficulty
All enemies ×100% magnification
No restrictions
All enemies ×150% magnification
No restrictions
All enemies ×200% magnification
No restrictions
All enemies ×300% magnification
- Special · Rare only
Spawn timeline
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Enemies 3 types
| Enemy | Count | Mag. | HP | Attack | First | Respawn |
|---|---|---|---|---|---|---|
 Large Iron Ball | 1 | 200% | 40 | 5,000 | Start | — |
| Large Iron Ball | 1 | 200% | 40 | 5,000 | 30s | — |
| Large Iron Ball | 1 | 200% | 40 | 5,000 | 56.67s | — |
| Large Iron Ball | 1 | 200% | 40 | 5,000 | 80s | — |
 Large Red Ball | 4 | 800% | 32,000 | 2,000 | 10s | 21.67–23.33s |
| Large Red Ball | 3 | 800% | 32,000 | 2,000 | 33.33s | 21.67–23.33s |
| Large Red Ball | 2 | 800% | 32,000 | 2,000 | 56.67s | 21.67–23.33s |
| Large Red Ball | 1 | 800% | 32,000 | 2,000 | 80s | — |
| Large Red Ball | Unlimited | 800% | 32,000 | 2,000 | 103.33s | 21.67–23.33s |
 Ms. Sign | Unlimited | 100% | 10,000 | 1 | 900s | 900s |
HP and attack include the magnification.
Clear rewards
If the reward chances add up to more than 100, the rows are rolled in order and each later row shares what is left.