It is relatively easy to nullify a single target or a small group of targets, but a more powerful being (such as a demigod or greater entity) or another major artifact taxes the Annulus to its limits.

Peru was excluded from the original group of high-burden countries, having met the targets and successfully reduced incidence.

The title refers to the game's porcine thieves, who become targets for an enraged group of birds after stealing their eggs.