Commanders face two different types of Rumbles: normal and duel Rumble.

In both normal and duel Rumbles, Commanders deploy Luminnies to defeat enemies and earn coins. Coins are used for deploying additional Luminnies or powering up existing ones. 

※ Deploying and powering up both require more coins as you progress further into Rumbles.

Within a Rumble, Luminnies of the same type can be merged. Merging Luminnies ranks them up and transforms them into a different Luminnie.

When Luminnies are merged, the skill gauge for the Knight fills up, and skills can be used when the gauge is full. 

※ The skill gauge can be overfilled, allowing skills to stack. The more skills you stack, the more powerful they become.

Losing three hearts to enemies or bosses results in defeat, and the time indicated at the top of the screen shows how much time is left until the boss appears.

Duel Rumble is a battle against your opponent. Luminnies you defeat in your lane are transported to the opponent's lane, bringing you closer to victory.

※ Failing to defeat each enemy costs you 1 heart, while a boss will cost you 2 hearts. The first side to lose 3 hearts loses in Duel Rumble.