Thanks for your reply =), well Im not very used to break graphics into tiles (that match correctly without seams) thats basically my main trouble I guess, I mean to achieve something like this I would have used something like a big image made of 4-6 buildings for later scroll it in a continuous loop, in fact yes I know that method works too but I would like to make this based on tiles for better performance and more varied background (instead of having same background looping)

Also yes I agree that for a modern game your idea is a lot better but for my current toolset real 3d is off my hand right now so I have to remain using 2D