Fat Princess is an action game developed by Darkstar Industries for the PS3. The game will only be available for purchase via PlayStation Network Store download.

Players choose from two different modes to play from in the game. The main mode of the game focuses on rescuing your team's princess from the enemy team's castle. The other available mode is a team-deathmatch game. When you join a game, you are given a choice to play as one of five different classes. The classes available in the game are: Swordsman, Archer, Wizard, Priest and Builder.

In the Princess Rescue mode, each team begins with eight to 32 players controlled by AI or other players. Each team has a castle to defend. The enemy team's princess is automatically in the enemy's castle. Players must break into the enemy team's castle and carry the princess back to their own castle. To inhibit the opposing team's ability to rescue the princess, you can feed the princess cake to increase her weight. The princess's weight requires more players to carry her across the field.