Knack 2 is an action-adventure where you control a shape-shifting robot called Knack. Following the original game, you battle your way through Pixar-style enemies and solve simple puzzles using your size-shifting abilities. It's familiar territory but stands out for the cooperative play in a beautifully realised cartoon world with really high production values.

Following the events of the first game, Newhaven is under attack from four Titans. Knack, and his companions Lucas and Ava, embark on a quest to uncover ancient weapons and stop the Titans' rampage. You work through a series of long, linear levels, journeying from start to finish, while battling enemies, such as humans, robots, and vehicles, finding secret hidden objects that give Knack upgrades, climbing, destroying objects, and completing jumping and switch-based puzzles.

As you progress you collect parts that allow you to change size. This not only offers greater impact for larger enemies but to shrink down and get through small gaps. You steadily upgrade your abilities through the skill tree as you collect treasures from the chests you find.

The result is a game that extends not only the story but features of the first game. It adds offline multiplayer, so an extra player to join and leave the main story at their leisure.