Flavor text is what makes roleplaying games interesting and unique in nature. Without it, they become a simple array of numbers and stats. Flavor text is genereally known to be any text which does not directly affect the mechanics of the game (i.e. the numbers and how they interact with each other). For example, there are many spells which can be cast in order to deal flame damage, but what makes each unique is the descriptions which accompany them. While firebolt is described more like a crossbow bolt made of flames, the spell Fireball is known to be a ball of fire which shoots forward and expands.