You control the arrow with the arrow keys. You main goal is to "catch" the watermelon as many times as you can. Colliding with the planet, however, makes you lose a life. Also, press w to shoot. if you hit the watermelon you get a point, if you hit the planet, you get +0.4 life. Press a to activate a blue shield that also gives you 0.4 life when it touches the planet. Press d to create a yellow shield that extends your reach.
I thank myself(for the project), and watermelons(for the watermelon)