Yes I could, but they will cost you serious money, and unless you're going to monitize your game, (not sure how you would) it's not really going to be worth the money. I can do the art, I can even program it, but it's a massive project and you're looking at a monthly rate rather than paying for each image.
If this is what you want, make me a monthly or weekly rate offer. I'm going to have to stop accepting all other commissions, so it needs to be a good one. But all that aside, it would be a fucking epic game.