The fun of giving happiness never stops as we continue to make these cute but sad little monkeys get the happiness they deserve. The ordeal still continues here in Monkey Go Happy 4! Increase the happiness because a new monkey has arrived, and it looks like monkey grandpa also wants to become a happy monkey. Solve various puzzles in 15 of these stages. Interact and use your wits on how to use each and every object you see around. Complete all of these 15 stages and you will unlock the final stage! Hurry and make these monkeys go happy!