I've done some thinking on how game levels are managed and have come to the conclussion - I'm not sure. Maybe there is a good read on the topic of handling game levels and their logic? Do all game levels consist of some kind of a tile map? As far as i know, for example, in 3D games the game worlds are split in to chunks, and only the few closest to the player are rendered and there logic processed. Am I right? What about RTS ganes in which units move all around a map? AoE2 is on my mind, also AoE3 because it's 3D.