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Games that challenge the player with critical thinking to solve levels. 

Focused on imparting a skill, lesson, or piece of information to its player that would be helpful to them in other aspects of life, such as a faster typing ability or knowledge about a period in history.

Subgenre of Horror, where player's character is usually more vulnerable and under-armed, usually focusing on evasion, stealth and/or puzzle-solving, rather than combat.