Pixel artist and animator Hat-Loving Gamer has created the ultimate retro dream-match as 101 characters from gaming's past and present are plopped into a single chaotic race of Super Mario Kart. Unfortunately this is NOT a ROM-hack that you can emulate on your smartphone, but it's still one hell of a ride:

 

 

Here's just a sampling of the original sprite work that went into this short:

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images via Hat-Loving Gamer