I luv this series-nobody, NOBODY does it like 58works. I have been waiting for another DOOORS game for quite a long time-please continue to make more DOOORS & sooner rather than later!! Normally, I play multiple games at the same time, going back & forth when I get bored with whatever game I'm playing. When I play DOOORS however, I always end up playing straight thru to the end. I'm locked & loaded & completely engrossed. It's not a long game anyway (think it was only 40 levels this time) - I was so disappointed when I realized there were no more doors to open or extra level to purchase. I wish they'd include extra levels-I would definitely be willing to pay for extra levels or to pay for a longer version of the game with a lot more doors to open. The puzzles are fun, not too difficult, but they challenge the way you think-as silly as it sounds it's actually rewarding when you finally "get it" & you open that next door. I like when the game uses physics or incorporates tools of the phone to help solve puzzles-it forces you to exercise the "flabbier" parts of your brain. Exercising is great but it should also be fun & this game never takes itself too seriously-the balding Japanese gentlemen skipping across the colored floor tiles is utterly ridiculous-you gotta smile whenever you see him! Like I said before, PLEASE continue to make more DOOORS games-you have a large fan base-so keep 'em coming!!!