Before each battle, upgrade and equip your plant weapons. You can unlock new weapons and level them up by purchasing them with Points. Equip up to seven weapons before you start each battle.
Play the game with the mouse.
Scroll with the mouse wheel or use z and x to zoom in and out.
Drag with the mouse or use the arrow keys to move the playing screen.
Hit SPACEBAR to center the scene on the trunk.
Pause with P.
Change speeds (normal/fast) with SHIFT.