Here is the list of the top 20 iOS universal free apps that heads the iTunes Chart for September 12, 2011.

Early Bird: You just have to help the Early Bird catch the worm in this game. Your flight, however, will not be unchallenged as you make your make way through 72 addictive levels. Discover beautiful landscapes, earn achievements and top the leader board as you fly your way to success in this incredible action puzzle game. The game will offer gorgeous HD graphics with simple & intuitive gesture controls.

Tangled: Tangled is an addictive puzzle game that both simple and mind bending. The goal of the game is to untangle the lines and make sure they don't overlap. Touch the dots and drag the lines to untangle them. There are 30 carefully designed puzzles that provide a smooth learning curve. Once you finish the levels, you can have unlimited fun with the randomly generated puzzles. The game comes with 10 difficulty levels and online score tracking is available.

Crouching Panda Hidden Swine: This is one of the few apps which boast more than 500,000 fans. You either try to own the crown of the king of animals or want to become a master of kung fu. Choose an animal (Crocodile, Panda, Rhino, or even the Skunk), give special abilities to it, arm it and send to the Arena to fight real opponents with great tricks and humor. There are 15 different animals to choose from along with more than 60 types of weapons and more than 40 types of armor. There is also a set of elixirs, potions and magic scrolls that you can use to your advantage. The game is also available in Russian.

Talking Larry the Bird: Larry the bird is your whistling and talking bird friend. Play the piano keyboard and make Larry whistle a perfect tune. He will also repeat whatever you say. You can also poke him, feed him, strike him with lightning or make him bow and accept applause. Record your own videos of Larry and save them to your library and send them as MMS, share them on YouTube & Facebook or send them by email. The new version 1.1 has made Larry more attractive.

Brain Fit 2: Brain Fit 2’s idea is simple. Just put the colorful shapes into one big rectangle by moving them with your finger. The game is actually pretty tough to counter with 90 addictive levels that will test your brain. The game offers amazing retina graphics. The new update 1.4.1 now provides 15 easy levels, 10 medium levels and five hard levels.

Zombie Highway: Your Goal here is to survive as long as you can. You will have a heavily armed passenger and will be attacked by an army of super-strong, leaping zombies. Shoot zombies with a growing arsenal of handguns, shotguns, and automatics. Shoot recently smashed zombies for extra damage. Improve your skills, unlock weapons and beat all your friends on Facebook. There are 13 different guns and six levels in two environments. You will face seven different kinds of jumping zombies.

Fondue Maker: Create an entire gourmet meal from appetizer to dessert and everything in between- fondue style. Pile as many fruits and treats as you can on your plate and tap to eat.

Fling: Fling is a unique puzzle game featuring 10,000s of unique puzzles, such that no two puzzles you encounter are ever the same. You could split into 30 levels of increasing difficulty. Fling guarantees you many long hours of puzzling fun. Each puzzle is solved by simply flinging (pushing) the furballs, and watching them bump each other off the edge of the screen, until only one is left. The game comes with Free-Play mode, Arcade mode, Challenge mode and a Frenzy mode.

Line Runner: Running is the only motto. Quickly jump over and roll through obstacles, as fast and as far as you can. You can Join more than 4 million Line Runner players around the world and try to beat their score with this recent app store hit. Line Runner offers fast paced and challenging gameplay along with increasing difficulty from easy to bone breaking.

Monster Pet Shop: Run your own Monster Pet Shop that grows, exhibits, and sells fantastic magical creatures. Play with, care and feed your creatures to maximize happiness. Happy creatures award more money when you find them good homes. Customize your Monster Pet Shop with three different habitats – Dirt, Grass and Water, and unlock ever more wonderful creatures by cross breeding with your friends’ collection. Players can collect upwards of 25 different monster types and over 100 unique looking monsters. Play online with your friends to share eggs and grow your collection.

Little Helper: Cleanup you old and dusty hut and, as a reward, get experience points and money. You may even find a rare item lodged beneath all that dirt. Collect a set out of them and trade it in for a reward. Once every chore has been run, pay a visit to your friendly neighbors who could use a helping hand. Get their gratitude, companionship and new rewards this way.

Naked King: Build the ultimate army, defend your castle, devastate your enemies and crown your king in this epic strategy sim adventure. Allocate resources wisely and hone your tactical skills to rise from the ashes and become an all-powerful empire. There are 20 worker and combat units such as Knight, Sniper, Shielder, Miner and Wizard who give you the building blocks for your winning strategy. Conquer 300 stages by defeating over 30 specialized monster varieties, plus 8 special boss stages.

NBC (iPad only): The all-new NBC app allows you to take all your favorite NBC shows on the go. Watch the latest full episodes, view photos, read recaps, play games, keep track and see previews of upcoming shows, and interact with other fans. A customizable myNBC dashboard with My Feed is available along with a personalized view of your favorite shows and related content. There are exclusive photo galleries from NBC.com.

Drop the Chicken: Your mission is to help Chuck get to each nest while eating all the bugs along the way. Drag the acrobatic tools into place and then click the switch and watch Chuck bounce, slide and float around the levels. Use balloons, fans, conveyors, mouse holes, elastic bands, chick magnets and springs in your effort to get all the bugs. There are 80 tricky levels in over five worlds, 5 bonus levels and hidden Easter eggs. You can also play your own music in the background while you play.

Ragdoll Blaster 2: The Ragdolls are here and are ready for more physics puzzle action. The game is the much anticipated follow-up to Backflip Studios’ famous Ragdoll Blaster. Fire a ragdoll with a touch to hit the target and solve the puzzle. There are over 150 levels with 15 new bonus levels and retina display support. All new mechanics such as gravity effects and teleporters have been introduced.

Camera360 Ultimate: This is the most popular App for mobile phone photography on other platform. Camera360 is the world’s favorite application software for mobile photo photography. The app will make your photo taken by mobile photo more charming, interesting and funny. Camera 360 provides the most popular 13 kinds of special effect camera function and Effect Enhancement.

Demotivational Pics: Demotivational Pics is a huge FREE collection of all your favorite Demotivational images contributed by your fellow users. Absolutely hilarious Demotivational pictures get updated every day. You can view pictures in different sorting orders such a popular, recent, or just randomly.

DuelPoker: Join the non-stop sports league of Heads Up Texas Hold'em. In this online poker arena, players compete against each other in one-on-one ring games, as well as 4-player and 8-player tournaments. The game offers the fastest-paced Hold'em gameplay. Play an entire game in the time other games take to play a single hand.

Hospital Story: You play the role of head doctor in this wacky, challenging and fun-filled game where a crazy epidemic has hit the city. Using limited staff, resources and equipment, it's your duty to nurse as many patients as possible back to health. Keep an eye out for VIPs, and cure your patients before the city's population is totally diminished.

NFL ’11: NFL 2011 is all-new for the NFL season. Follow all the action from around the NFL including live scoring, game and team alerts, highlights and more. Key features include Live scoring and play-by-play, custom team and game alerts, NFL.com Fantasy Football integration and in-game big play and quarterly audio highlights. Set alerts for games and stay in touch with everything you love about the NFL no matter where you are.