I'm looking for IOS games that play with perspective and impossible angles, stuff in the same vein as these games:
There is an upcoming game called, Monument Valley by ustwo. http://www.pocketgamer.co.uk/r/iPad/Monument+Valley/news.asp?c=55232 http://www.pocketgamer.co.uk/r/iPhone/Monument+Valley/news.asp?c=54162
Well 1-bit ninja technically uses perspective manipulation to hide secrets, but Escher isn't what comes to mind when thinking of if Then there's Kairo, which doesn't really use perspective manipulation but it's puzzles, level design and art style are very Escher-esque. That might be more like what you are looking for.