Knack on the PlayStation 4 is produced by SCE Japan Studio and published by Sony Computer Entertainment and is exclusive to the PlayStation 4, the game is best described as an action game whose graphics are of a comic book style. The player takes on the role of Knack. The character Knack is a type of robot, the result of a scientific experiment designed to help humans beings in their war against a goblin like race of invaders who come equipped with an array of offensive weaponry. He can change shape and size by absorbing metal and any other bits and pieces lying around, some of these bits often being parts of defeated enemy hardware.
You can think of Knack, the game, on the PS4, as being a cross between Crash Bandicoot, Gears of War, with some platform action elements thrown into the mix. It has quite an extensive variety of surrounding to delve into and explore which adds greatly to the overall appeal. Unlike some games, where the scenery is repetitive, with Knack each level is totally unique.
Knack's metamorphosis from small through medium to large has him generally becoming bigger the farther into the game you get, with some variations in size as needed in certain situations as dictated by the player's actions. Bits of his surroundings such as street lights, road signs or enemy equipment such as bits of armored tanks can be incorporated into his frame to give him more bulk, but taking hits from enemies has the opposite effect. However, the player has little or no control of what bits go where as this is mostly decided by the mechanics of the game. Essentially the game itself dictates how large Knack needs to be.
Combat with the goblins is pretty basic and close up and relies on just a few moves and combinations. Knack is unable to block defensively and so avoiding hits can be quite a challenge, but he can dodge and run making avoiding damage entirely possible with practice. He does have one interesting trick up his sleeve which consists of spinning fast on his vertical axis resulting in the bits he is composed of flying off in all directions causing mayhem among those enemies nearby. When Knack is in his larger form he is able to pick up and hurl the hardware and weaponry of his goblin enemies such as armored vehicles and aircraft. He can also rise in stature to the height of the buildings around him and pull bits off his surroundings and throw them around. Under certain circumstances knack can revert to his original small stature and crawl through confined spaces or even become invisible.
There is fun to be had from the game and a certain degree of re-playability as unlocked characters and items can be retained to play again through the level in which they were acquired. It is not really possible to say much about the graphics as in this genre there is no standard to judge them by, but they are crisp and clear but the central character himself is in my opinion not very impressive. The same comments apply to the audio, who knows how a shape changing robot should really sound? The capabilities of the PlayStation 4 are not by any means pushed to their limits by this game and Sony could well have chosen a better game as an early offering to show off the devices undoubted strengths.