Most games try to give all attributes about the same usefulness to a character. Therefore, certain characteristics might be merged (such as merging a Charisma-type and a Willpower-type attribute into a single Personality attribute), or split into more attributes (such as splitting physical "Comeliness" from Charisma in the original "Unearthed Arcana"), or even ignored altogether (for example, Intelligence and Charisma in a hack and slash adventure). In many games, a small set of primary attributes control a larger number of derived statistics such as Armor Class or magic points.