To my surprise, there was a whole lot more to this phenomena than one devoted fan putting a pony in a post-apocalyptic wasteland. That probably shouldn't come as too much of a surprise, as My Little Pony's popularity has exploded in recent years.
It's not just little girls who make up the fan base either - there's actually a huge section of the geek culture who are getting in on the action, including the creepy/awesome bronies. We've reached a point of the series essentially becoming mainstream: you can even expect to see all sorts of My Little Pony apparel and knick knacks at your local Hot Topic or Spencers.
While a good deal of the crossover fan art online is pornographic in nature, there's plenty that's actually SFW, and that's what we're going to cover here, from Mario Kart getting a saddle and hoof makeover to zombie horror games like Left 4 Dead getting an injection of magic friendship.