Saru Ga Daisuki

You are a yellow ninja monkey who's been caught by an evil doctor. What's even worse is that the b*stard's taken your girlfriend away. However, the doctor failed to notice your secret weapon, a red lethal ninja jo-jo. Find your way through the evil doctor's maze and get your girlfriend back!

Move with arrow keys, jump with X, throw Jo-Jo with Z + arrow key and switch between characters with C.

Source:

cactusquid.com