Magic points (MP; also called mana) are units of magical power that are used in many role-playing, computer role-playing and similar games as an expendable resource that is needed to pay for magic spells. Thus, magic points can be considered a specialized type of action points that are renewed slowly compared to other game events.
A character in such games will usually have a number of magic points based on his or her level and character class, among other things. Thus a mage will have more MP than a fighter and an experienced mage will have more MP than a novice. When a character uses a magic spell, a number of MP will be deducted from that character’s available MP to pay for the spell (more powerful spells generally cost more MP). If a character has too few MP, the spell cannot be cast. This system makes players choose between casting a few powerful spells, or many weaker ones.
In some games, MP replenish slowly over time, while in others a character must rest to recover MP. Other possibilities include stealing or absorbing them from other characters or from the ether, or by eating food or drinking magic fluids.
In many western computer games, the magic points gauge is depicted as being blue, in contrast with the red or green of the hit points gauge. These colors might be seen in the user interface and in the game’s items or spells (for example, a red potion is used for healing, a blue potion for restoring magic).
In general, losing all of one's MP in a game does not do the same thing as someone losing all of their HP (dying, fainting, etc), though a few cases (Star Ocean 3, for example) will cause a character to faint if their MP reaches zero.
Other terms designate units of psionic, or otherwise supernatural, power equivalent to MP:
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