From artist Ástor Alexander come these video game-inspired pulp covers: Super Mario, The Legend of Zelda, and Metroid. My favorite is the Mario one, mostly because I imagine that it's a series, and every book ends with Mario heading to another castle.
Alexander's also done this beautiful cover based on Bioshock Infinite:
And here are higher resolution versions of the top three from Alexander's deviantART profile. See close-ups at his Behance portfolio: