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Koopa Corps is a Special Attack used by Bowser in Mario & Luigi: Bowser's Inside Story and Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey. This attack costs 10 SP in the original game, and fourteen BP (sixteen on Easy) in the remake, and is unlocked after Bowser frees the Koopa Troopas in Blubble Lake.
When Bowser uses this move, a ball of Koopa Troopas will appear in his hand, tossing them off-screen after the player taps the button on the Touch Screen to start the move. Then, Bowser will retreat into his shell, and several Koopas will run in, retreating into their shells and bounce off a random enemy, causing damage. The player must then move Bowser up and down with the stylus, hitting the Koopa Shells back and forth. The shells will get faster with each hit, disappear after hitting each enemy a number of times, and more shells will come in.
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