Control the growth of the tree; build weapons to defense the waves of insect enemies. The game has 9 battles, 3 different style trees, 12 weapons (5 levels each), and 20 different enemies. Growing up your tree to make it have more limbs, building weapons on limbs or trunk to defense the insects, killing them to earn water. Insects come from the insect holes, they will only attack the trunk, and your weapons will not fire on insects once they have already landed on the trunk of the tree, so you will have to build weapons to defend the trunk while they are still in the air. Buy or upgrade more weapons when you get points, you can plan different strategies with different weapons. Mouse wheel to scale the scene, mouse drag to move the viewport; Hotkeys: Spacebar to select the trunk, Shift to switch between fast mode and normal mode, P to pause.