An extrinsic motivator is a possible known outcome which motivates play. Extrinsic motivators might be internal or external to the game (called rewards and prizes respectively) such as a particular power-up or cash. Extrinsic motivators can be strong drivers of play, but at the expense of creative problem solving. Players in search of extrinsic motivators will often engage in rote gameplay such as grinding, and so extrinsic motivators usually lead to retention (negative engagement) rather than enchantment (positive engagement).
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