When the game will start (after the startup sound) press space key Dragons will start coming they will try to destroy the wall so the HP will decrease click on dragons to kill them and to earn coins. You can use those coins to increase the HP and repair the wall by clicking on the wall. Each time you click on the wall 10 coins will be used for repairing. If the dragons get stuck at a place press A (glitch)
I made this project on my own. I used google for sounds and thanks to @dingdongpark scratcher for backdrops