It's not often a product description like this comes along, so I'm going to let it speak for itself:

Frantic and fun, Fat Princess pits two hordes of players against each other in comic medieval battle royale. Your goal is to rescue your beloved princess from the enemy dungeon. There's a catch though: your adversary has been stuffing her with food to fatten her up and it's going to take most of your army working together to carry her back across the battlefield.

Yes. It's 16v16, online carnage, as you fight over - and drag - a morbidly obese woman across the battlefield. There's 10 maps, five character classes, and one writer's captured heart.