Special Stages · Stage 6Covered in Dust砂ぼこりに包まれたなら1★ 100%2★ 150%3★ 200%4★ 300%210Energy Cost63,450XP Reward180,000Enemy Base HP6,000Stage Length12Max Enemies6.1Difficulty Test your team vs this stageStage rewards45% — XP ×150,00055% — XP ×95,000Enemy spawns (10)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesLarge Iron Ball200%10s—100%—Large Iron Ball200%130s—100%—Large Iron Ball200%156.7s—100%—Large Iron Ball200%180s—100%—Large Red Ball800%410s21.7s~23.3s100%—Large Red Ball800%333.3s21.7s~23.3s100%—Large Red Ball800%256.7s21.7s~23.3s100%—Large Red Ball800%180s—100%—Large Red Ball800%∞103.3s21.7s~23.3s100%—Ms. Sign100%∞900s900s100%—All River City Ball-Rolling stages