Player guide Mechanics
Round, economy and merge rules for eight-player Rumble.
Defend your castle and destroy the opponent’s. Rumble keeps the boss and Fate Gift rhythm every 3 turns, with more sun coins to build up faster.
Battle guide
Use the table for values and the chart for the increases on turns 4 and 7 and the plateau afterward.
| Round | Sun coins | Turn milestones |
|---|---|---|
| 1 | 25 | Normal monster |
| 2 | 25 | Normal monster |
| 3 | 25 | Boss |
| 4 | 30 | Skip Fate Gift: +5 |
| 5 | 30 | Normal monster |
| 6 | 30 | Boss |
| 7 | 35 | Skip Fate Gift: +10 |
| 8 | 35 | Normal monster |
| 9 | 35 | Boss |
| 10 | 35 | Skip Fate Gift: +15 |
| 11 | 35 | Normal monster |
| 12 | 35 | Boss |
| 13 | 35 | Normal monster |
| 14 | 35 | Normal monster |
| 15 | 35 | Boss |
The first 15 turns cover most battles. From turn 16 onward, income stays at 35 sun coins, so repeated rows are omitted.
Rumble shop probabilities depend on currently unlocked tiles, not directly on the turn number.
| Unlocked tiles | Cost 3 | Cost 5 | Cost 8 |
|---|---|---|---|
| 0 | 100% | 0% | 0% |
| 1 | 90% | 10% | 0% |
| 2 | 80% | 20% | 0% |
| 3 | 65% | 35% | 0% |
| 4 | 48% | 50% | 2% |
| 5 | 25% | 65% | 10% |
| 6 | 10% | 55% | 35% |
The Rumble shop has only cost-3, cost-5, and cost-8 tiers. Turns may indirectly affect tile unlocks, but shop probabilities use the current unlocked tile count.
Normal monsters and bosses share the HP multiplier framework, but all parameters come from Rumble’s own turn configuration.
Rumble does not currently apply permanent account power, so its power HP multiplier is ×1. The hidden system HP multiplier still depends on actual battle state.
floor[(3 + generating unit attack + fixed turn HP bonus) × turn HP multiplier × current Rumble power HP multiplier × hidden system HP multiplier], minimum 1
floor[(boss base HP + total board attack × attack absorption rate) × turn HP multiplier × current Rumble power HP multiplier × hidden system HP multiplier], minimum 1
（3 + 100 + 34）× 9.0 × 1 × 1
= 1,233（70 + 40 × 0.5）× 4.5 × 1 × 1
= 405The hidden system HP multiplier is read from actual battle state. ×1 here is only an example, not a constant for real battles.
Turns 3, 6, 9, 12, and 15 are boss turns.
| Round | Type | Key parameters this turn | Player-facing formula |
|---|---|---|---|
| Round 1 | Normal monster | Fixed bonus +2Base HP 3 · HP multiplier ×3.0 | (3 + unit attack + 2) × 3.0 × 1 × hidden system HP multiplier |
| Round 2 | Normal monster | Fixed bonus +3Base HP 3 · HP multiplier ×3.25 | (3 + unit attack + 3) × 3.25 × 1 × hidden system HP multiplier |
| Round 3 | Boss | Slime 22, Swift Snail 16, Lord Caterpillar 33, Terror Moth 44Attack absorption 50% · HP multiplier ×3.5 | (boss base HP + total board attack × 0.5) × 3.5 × 1 × hidden system HP multiplier |
| Round 4 | Normal monster | Fixed bonus +6Base HP 3 · HP multiplier ×3.75 | (3 + unit attack + 6) × 3.75 × 1 × hidden system HP multiplier |
| Round 5 | Normal monster | Fixed bonus +8Base HP 3 · HP multiplier ×4.0 | (3 + unit attack + 8) × 4.0 × 1 × hidden system HP multiplier |
| Round 6 | Boss | Slime 70, Swift Snail 52, Lord Caterpillar 105, Terror Moth 140Attack absorption 50% · HP multiplier ×4.5 | (boss base HP + total board attack × 0.5) × 4.5 × 1 × hidden system HP multiplier |
| Round 7 | Normal monster | Fixed bonus +15Base HP 3 · HP multiplier ×5.0 | (3 + unit attack + 15) × 5.0 × 1 × hidden system HP multiplier |
| Round 8 | Normal monster | Fixed bonus +20Base HP 3 · HP multiplier ×6.0 | (3 + unit attack + 20) × 6.0 × 1 × hidden system HP multiplier |
| Round 9 | Boss | Slime 154, Swift Snail 115, Lord Caterpillar 231, Terror Moth 308Attack absorption 50% · HP multiplier ×7.0 | (boss base HP + total board attack × 0.5) × 7.0 × 1 × hidden system HP multiplier |
| Round 10 | Normal monster | Fixed bonus +34Base HP 3 · HP multiplier ×9.0 | (3 + unit attack + 34) × 9.0 × 1 × hidden system HP multiplier |
| Round 11 | Normal monster | Fixed bonus +45Base HP 3 · HP multiplier ×11.0 | (3 + unit attack + 45) × 11.0 × 1 × hidden system HP multiplier |
| Round 12 | Boss | Slime 278, Swift Snail 208, Lord Caterpillar 417, Terror Moth 556Attack absorption 50% · HP multiplier ×14.0 | (boss base HP + total board attack × 0.5) × 14.0 × 1 × hidden system HP multiplier |
| Round 13 | Normal monster | Fixed bonus +77Base HP 3 · HP multiplier ×18.0 | (3 + unit attack + 77) × 18.0 × 1 × hidden system HP multiplier |
| Round 14 | Normal monster | Fixed bonus +101Base HP 3 · HP multiplier ×23.0 | (3 + unit attack + 101) × 23.0 × 1 × hidden system HP multiplier |
| Round 15 | Boss | Slime 470, Swift Snail 352, Lord Caterpillar 705, Terror Moth 940Attack absorption 50% · HP multiplier ×29.0 | (boss base HP + total board attack × 0.5) × 29.0 × 1 × hidden system HP multiplier |
| Round 16 | Normal monster | Fixed bonus +172Base HP 3 · HP multiplier ×36.0 | (3 + unit attack + 172) × 36.0 × 1 × hidden system HP multiplier |
(3 + unit attack + 2) × 3.0 × 1 × hidden system HP multiplier
(3 + unit attack + 3) × 3.25 × 1 × hidden system HP multiplier
(boss base HP + total attack × 0.5) × 3.5 × 1 × hidden system HP multiplier
(3 + unit attack + 6) × 3.75 × 1 × hidden system HP multiplier
(3 + unit attack + 8) × 4.0 × 1 × hidden system HP multiplier
(boss base HP + total attack × 0.5) × 4.5 × 1 × hidden system HP multiplier
(3 + unit attack + 15) × 5.0 × 1 × hidden system HP multiplier
(3 + unit attack + 20) × 6.0 × 1 × hidden system HP multiplier
(boss base HP + total attack × 0.5) × 7.0 × 1 × hidden system HP multiplier
(3 + unit attack + 34) × 9.0 × 1 × hidden system HP multiplier
(3 + unit attack + 45) × 11.0 × 1 × hidden system HP multiplier
(boss base HP + total attack × 0.5) × 14.0 × 1 × hidden system HP multiplier
(3 + unit attack + 77) × 18.0 × 1 × hidden system HP multiplier
(3 + unit attack + 101) × 23.0 × 1 × hidden system HP multiplier
(boss base HP + total attack × 0.5) × 29.0 × 1 × hidden system HP multiplier
(3 + unit attack + 172) × 36.0 × 1 × hidden system HP multiplier
Complete configuration exists after turn 17; this page focuses on common battle lengths.
Rumble boss turns are 3, 6, 9, 12, and 15.
Fate Gifts appear on turn 4、7、10. Choose one of three available options, or skip for extra sun coins.
Complete configuration exists after turn 17; this page focuses on common battle lengths. Shop probabilities still use the current unlocked tile count.