Fat Princess: Fistful of Cake is adapted for the PlayStation Portable handheld system.
The single-player campaign contains all the levels from the original Fat Princess plus six new levels with unique environments. The game also features new multiplayer modes including Grim Reaper, Dilapidated, Demolition and Jailbreak.
The story follows the character of Fat Princess as she must fight against various enemies to save her kingdom. Along the way, she meets other characters who aid or hinder her progress.
Gameplay involves controlling Fat Princess as she navigates through levels, fighting enemies and collecting cake to increase her size and power.