Gumball needs to draw a line of salt around Greeny and dispell him.
There’s a certain amount of cursed area you need to include in order to defeat the spirit, and you get bonus points for covering extra area! You also get points for catching Greeny’s spooky pals. Get rid of Greeny, save the school and advance to the next level.
Remember to avoid the evil ghosts lest you become one!
