Mouse to aim, left click to fire. The notes fire after a period of beats, indicated by the particle plume on the note turret. Holding down the left button will fire notes as soon as possible.
You get points for defeating enemies. Your point multiplier goes up after enough enemies have been defeated without touching the platforms? prevent the enemies from hitting the platforms to win! Various upgrades are available in between levels.
This version has 10 levels of gameplay.
Have fun!