To start playing you must first select a level. Next, choose whether to play in snake mode or not. If the snake mode checkbox is checked then snake mode is selected. After that hit Start Game. Normal features multiple enemies whilst snake mode features one snake of enemies. Enter a save tag to use a save file. Your save tag can be anything.
To place turrets tap the Toggle build/destroy until you see build mode in the upper hud of the game. That means you can place turrets. Tap on the darker blocks to place a turret. To destroy turrets tap Toggle build/destroy ode to enter destroy mode. Tap turrets to destroy them.
Upgrade bullets by pressing the Bullet Upgrade Damage button. Look at the upper hud to see how much our bullets do per hit.
Buying turrets and upgrading your bullets cost money. Every time you kill an enemy you earn money. You can see the price of this and your money in the upper HUD.
To reset your game press the debug menu button and then the reset button.