Balloon Fight (WarioWare: Smooth Moves)
From the Super Mario Wiki
Balloon Fight is a microgame from WarioWare: Smooth Moves in 9-Volt and 18-Volt's stage. It is a 3D version of the Balloon Trip mode from Balloon Fight, and is also an extra minigame accessed via the main map screen.
The player must hold the Wii Remote and swing it up and down as if he or she is attempting to fly. This will make the Balloon Fighter fly. If the player swings the remote, the character will hover. If the player doesn't, the character will slowly float downwards, and possibly be eaten by the Fish. These moves are used to pass under or over electric orbs or to knock down enemy Balloon Fighters to avoid losing the microgame. The player must float in the air without taking damage until the time runs out to win.