And if you're looking to identify a few of the lesser known systems in this pile, Consollection is basically an mini encyclopedia on the matter. [Consollection via Gamefreaks via GameSetWatch via Kotaku]
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I was sad at first that I didn't have half of these then I remembered that a lot of them were crap. Given they included the pokemon N64 I'm surprised they don't have the Panasonic_Q or the PSX.