I just discoverd Displate and love their metal posters. If you havnt heard check them out. Diablo has some on there, POE, a lot more games. I got 3 so far King from POE, the Butcher from Diablo, and Star Trek. Matte, Gloss, or Textra(raised drawing gives it a 3d effect) medium or large posters.
They stick on the wall with a safe removable magnet so you can interchange your posters if your feeling like a new vibe that day. I highly recommend, btw there are coupons 28 to 35 % off orders if you look on the forums.