In this week's episode, Mark teaches us to cast polymorph, a 4th level transmutation spell. Just kidding! But Mark does put his high INT score to work helping us understand polymorphism, a useful feature of object-oriented programming. Later on, Stephen talks about the pattern of "save scumming" and considers how it might influence how designers create games. Ellen noodles on things.

• Noodle demo game

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  Ellen Burns-Johnson

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  The Training Arcade