I'm thinking about having the game run at 2048x1536 but I figure performance won't be good enough on the iPad 4 for that. Characters would be 128x128, backgrounds would be 256x256 and I'll have about 300 objects. Also is it worth it? At this resolution, big objects become small but with more detail. My monitor only displays 1920x1080 but I figure I can scale the game down to test it. If I don't support 2048x1536, I figure I'll go for 1024x768, unless someone had a better idea.