Here is a trailer of Knack for the PlayStation 4.

"Mankind must turn to an unlikely hero named Knack to protect them from a dangerous new threat. Thanks to the power of mysterious ancient relics, Knack can transform into a gigantic fighting machine with immense power and strength. From Mark Cerny, one of the greatest minds in video games today, Knack is a fun-filled adventure that invites players to wield fantastic powers and discover a unique and vibrant world, available exclusively for PlayStation®4".