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A boxing puzzle game. An everyday life simulator. These are just two of the many eyebrow raising ideas that looked like crap on paper but gold in execution. In an era where game developers are taking less and less risk, they'd be wise to not conform, and come up with an original idea every now and then.

Early on in the development process you get some insane pitches. For instance, Super Mario was originally supposed to pack heat and Arkham Asylum was supposed to be a rhythm game. Those got scrapped, but these came into fruition. Next time somebody tells you that your idea sucks, and by proxy so do you, point to this list and let them know you're an innovator. Here are 21 such Terrible Concepts That Panned Out Spectacularly.

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