I want to start by saying that i have a lot of love for this game. Mainly because it's an important game from my childhood, but also because I've always adored monkeys, and this games has a lot of monkeys.
Having replayed it now as an adult i can say that it is a solid 3D platformer. The Sky Flyer and the double jump makes the task of running through a stage feel fun and free. Probably the worst part is when they make you drive a tank with tank controls. However, the monkeys and their personalities always hug the spotlight. 5/5 just for the monkeys.