Mark Cerny isn't just the lead on PS4 hardware. The Marble Madness creator is also directing the first announced game for the hardware, Knack, about a robot made of an assemblage of junk, fighting goblins.

It's cartoony and features some combat, some stealth, and big junkbot punches. Knack shows the ability to drop all the seemingly magnetized parts that make up his body, in order to shrink down to tiny size. We're guessing the use of all those parts is meant to show off the PS4's ability to deal with a bunch of particles.

Developing...

This article was originally published on Joystiq.