So I'm making a 2D game for iOS and I have one texture atlas for the Retina iPad that's 4096x4096. My source png file is 1mb. In Unity, I have it set to an "advanced" texture so I can disable mip-maps, and the only viable export format option if I want it to look decent is RGBA 32-bit. At this export setting, the image size balloons up to 64mb (4096x4096*4), which when combined with my other huge images, makes my app a ridiculous 122mb (but only 14mb when zipped!). Am I missing something? Is there some export setting that will export a lossless yet compressed image (ex. png)? When I build for the WebPlayer, the app size gets compressed down to only a few MB (I guess due to the LZMA compression), I don't really see why Unity wouldn't do something similar with an app's resources.assets package on iOS, a platform where file size is even more crucial.