The challenge system offers you the opportunity to increase your fighting gains (drops and XP) if you fulfill the set conditions. When a fight is started against a group of monsters, you will be given a challenge at random — two if you are in a dungeon or arena. Challenges are completely optional, you can choose to either complete both, one or neither. Challenges requiring use of spells appear only if someone in the fight has the required spell (Roulette for Casino Royal, Cawwot for Gardener, etc.). Mob-size bonuses are calculated on the number of monsters minus 1.