I read here http://gmc.yoyogames.com/index.php?showtopic=631986 that surfaces should be kept small, but are great for optimization. This was a few years ago, thus I am asking. What is the rule of thumb here? "The English phrase rule of thumb refers to a principle with broad application that is not intended to be strictly accurate or reliable for every situation." Generally speaking When should we use a surface vs when we should not? I have a massive room that the player would may see all at once if they zoom out. 7680x3840. I have 5 layers of tiles of various sizes to create a map look. ~ 200,000 tiles I make this map dynamically, but exactly once at creation. Should I put that all on 1 surface instead of a few hundred thousands of tiles?