This is a neat little puzzle game! I like how you have to talk to all the monkeys in order to get the bigger picture for how to solve each puzzle. The middle puzzle is still a bit confusing even with the clues (and to be honest, I just started brute forcing different possible combinations until I got the right one), and I wish there was an actual puzzle to picking the right key chest at the end rather than just having to guess.
Other than those minor nitpicks, I think you did a nice job with this game!