"Magic" may be substituted with psychic powers, spiritual power, advanced technology or other concepts that would allow a character to influence the world around them that is not available in real life. Magic is often restricted to a specific class of character, such as a "mage" or "spellcaster", while other character classes have to rely on melee combat or physical projectiles. Other character classes, such as those that rely on melee attacks, may also have a "magic" bar that limits their special abilities, although they are usually called something different, such as the Barbarian's "Fury" in "Diablo 3".