Special Stages · Stage 5Whose Ball is This?これは何組の玉ですか1★ 100%2★ 150%3★ 200%4★ 300%Data updated: 2026-07-24180Energy Cost47,000XP Reward120,000Enemy Base HP4,500Stage Length15Max Enemies5.2Difficulty Build a lineup for this stage Test your team vs this stageStage rewards45% — XP ×100,00055% — XP ×64,000Enemy spawns (8)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesLarge Iron Ball150%113.3s—100%—Large White Ball6000%126.7s—100%—Large Red Ball600%140s—100%—Large White Ball6000%70s13.3s~16.7s99%—Large Red Ball600%50s20s~23.3s99%—Large Iron Ball150%30s26.7s~30s99%—Large Red Ball1%10s—99%BossMs. Sign100%∞900s900s100%—All River City Ball-Rolling stages