CryptoKitties is a game based on biological science, and we always wanted to release a Fancy who had the fire of science alive in his heart. In fact, long before Doc Purr was actually released, we teased him as the culprit of in-game bugs in the form of misplaced genes.

CryptoKitty Fancies are usually inspired by holidays, seasonal celebrations, and fun stuff that the developers desperately want to see a Kitty look like (alien cat? Duck cat? Come on, we had to!). For Doc Purr, we wanted to take that in a slightly different direction. What if we created a Fancy and built a mystery around it? What if this Fancy had not only a bio, but a whole life history?

We released Doc Purr before Fancy bios could be individualized, so instead of telling his story through his bio, we started to tell it through other Fancy cats. We released a bio for DuCat, and in it he visited a mysterious doctor in an ancient, crumbling castle. The doctor did gene testing on DuCat, and found out that he wasn’t from a dynasty of royal cats at all! And Negato was lucky enough to head to Kittenheim and steal the Great Red Stone from Doc Purr, which the doctor was using to power one of his experiments.

Kittenheim is another part of Doc Purr’s creation story. It’s a town full of feline Frankensteins and their mouser monsters. You might run into any number of strange Fancies there–roaring in a cave, sparkling in a field, or howling in the woods. You’ll start to see more and more hints about the world the Fancies are part of; keep your eyes peeled for that lore in the next few months.

Speaking of lore, Doc Purr will tell you his life story sooner than you might think, and in a way you won’t be expecting. But for now, all you need to know is that he’s hard at work in his lab, trying to crack the secret CryptoKitty genome so he can make the perfect monster. For now, he’ll have to settle for his assistant, Stitches, and purrhaps whatever’s moving under that sheet…