Biomechanical Toy is an arcade platform shooter with gameplay similar to Metal Slug. You play the hero Inguz who has been called to retrieve the stolen 'Magic Pendulum' from the criminal Scrubby. The pendulum has the power to bring toys to life, so you have to fight your way through the Kingdom represented by several platform levels, now filled with all sorts of evil animated toys. You can get rid of them with your upgradeable weapon which is filled with ammo clips and has to be reloaded when a clip is empty. Levels feature bonus items like food for regaining health or special ammo clips, checkpoints and end-of-level bosses.