Mobile Puzzle/Casual Game iOS

Disclaimer: Looking for freelancer(s) from the United States only. You will need to sign a Non-Disclosure Agreement (NDA.) I am looking to have a puzzle/casual game I thought of turned into a full-fledged working app on iPhones. The game has two game modes and is not level based. I am looking for, 1. Very detailed, smooth graphics and animations (I will want to see examples of your work and try out some of the apps you've worked on.) 2. A Leaderboard system that will allow players to compare scores against their friends as well as the rest of the world. 3. Adding in-game advertisements using iAd. 4. Professional logo and menu designs. This includes, a logo design for the game name, high-quality menu buttons, a flash screen for when the game is booting, and images for the app itself (on the App Store and on the phone.) 5. Well written code that will not contain bugs that would cause problems down the road. These are the requirements I am looking for, upon signing the NDA I will disclose the documents I have prepared that detail the game I have envisioned. Simply put, the focus initially will be on making a working prototype of the first game mode and tweaking it. After the prototype works very nicely as intended (I will want to test it myself,) the second game mode will be worked on which will be very similar to the first. After that, graphics and animations will be done to improve the visuals, followed by creating the menus and leaderboard system. At that point, I will be bringing another individual on board who will create sound effects and music that will then be implemented into the final version. Then the in-game advertisements will be added Also if there are any remaining bugs at that point they will need to be fixed. Finally the app will be submitted to the Apple Store and assuming there are no problems with the submission process, the final payment will be made. If everything goes smoothly I will be looking to hire you and/or your team in the future. Please list the following in your bid, 1. What is your team size? 2. What game engine or program will you be using to build this? 3. What are your most successful applications currently on the Apple Store?