During character creation, attribute scores are usually determined either randomly (by rolling dice) or by distributing character points. In some games, such as "World of Warcraft", the base attribute scores are determined by the character’s race and class (however the vast majority of stat points will be obtained through end-game gear/equipment). Because they represent common, in-born characteristics and not learned capabilities (as skills do), in many games they are fixed for the duration of the game. However, in some games they can be increased by spending experience points gained during the game, or as part of the process of "levelling up".