Varying from rock, jazz and original sound effects the games soundtrack makes for a pleasant experience that suits the game well just as it adds to the entertainment of the game.
While a competent clone of Katamri gameplay wise, the story and should seem to be missing in what plays out as a very dry game that does not enrapture the player as one would expect.
There are three different modes of play, timed, timeless and exploration. Timed consists of collecting a certain amount of objects before the time limit runs out. Timeless allows for the user to play without a counting down clock and scores the player depending on how many objects they picked up. Lastly there is exploration mode where the player is free to roam each stage as they want. Timeless and exploration modes do need to be unlocked through timed play and are not available from the start of the game.
Much like how Katamari games have a crazy story that sets the stage for the unique gameplay, American McGee;s Grimm also has an outlandish story where the player sets out to scare their father through six levels or rolling around stages scaring people to death.
The game centers around rolling ones character near AI characters in order to kill them. This can even be done to children, when rolling near them the children will be hung by a noose. This theme is a bit dark and probably is not suitable for young children.
Using the WASD keys one is able to maneuver their character while simultaneously using the mouse to look around. The control scheme should be quite familiar to FPS players and is a great way to control the game due to the good design.