System: Nintendo 64
Genre: Platformer

Mischief Makers was a brilliantly bizarre platformer with beautiful 2D graphics, an epic soundtrack and very challenging gameplay. You played as an Ultra-Intergalactic-Cybot G (basically a robot maid) named Marina who has to rescue her creator, Professor Theo, after he is kidnapped on a visit to the planet Clancer, a world where everything has "gyroid" face. The gameplay involved shaking everything in sight ("Shake shake!") to collect gems and beat enemies, but occasionally went completing off the wall with mad boss battles or an entire section where you take part in the local sports day. It's one of those games I think I could replay over and over without ever getting bored.
"Heeeeelp Me Marinaaaa!"