The player controls the character holding a gun or a bow and arrow on the left side of the screen, the character moves up and down continuously, the right side of the screen is the enemy moving up and down continuously, the player will have the same number of bullets. with the number of enemies, each time touching the screen the player will create 1 bullet at the position of the gun when the player presses it, take 1 bullet at a time, when the last bullet reaches the last bullet all The bullet will fly straight to the right of the screen, if it hits and destroys all enemies => win, add new enemies through the screen, if missed 1 enemy => lose
Winner: compare with high score
The game has 2 modes:
Normal: enemies move continuously
Difficult: Enemies move for 1 second then stand still