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Control Action
Neutral control Move Luigi
A button Interact with objects, open doors, call out "Mario!" (this doesn't have any effect)
B button Hold to switch off flashlight
Neutral cstick Rotate Luigi (must be used in Sidestep Mode)
X button Use Game Boy Horror (first-person view)
Y button View map
R button Suck in objects (Ghosts, coins etc.) with vacuum
L button Blow Elements from vacuum
Z button Open Items menu
Start button Pause the game