The top free iPad applications by country* for the week, by number of downloads, recorded on January 17.

1. USA
Angry Birds HD Free (games)
A free high definition version of the hugely popular 'Angry Birds' game.  Players have to launch the wingless 'angry birds' into various structures in order to topple the building.

2. UK
Mr.  Giggle HD Lite (games)
A popular puzzle game in which players have to move blocks of different colors in order to form columns of the same color. Points are awarded for building the most columns in the fast possible time and with the fewest moves.  

3. France
Geared 2! (games)
Players of this logic game have to position a series of cogs connected to a hamster wheels in order to power the 'blue gears'.  The app allows users to integrate their own music into the game play.

4. Canada
Mr. Giggle HD Lite (games)
See 'Mr Giggle HD Lite'.

5. Japan
American Ball (games)
This app provides a modern version of the classic arcade game 'pin ball' - where players use a combination of flippers to guide steel balls into targets. The app includes an online tournament mode.

6. Australia
Mr. Giggle HD Lite (games)
See 'Mr. Giggle HD Lite'.

7. Germany
Mr. Giggle HD Lite (games)
See 'MR. Giggle HD Lite'.

8. China
?? ??? 2 / Fruit Link 2 (games)
Translated in English as 'Fruit Link 2' this game involves pairing up matching pictures of fruit in the fastest time possible.  The app has 40 different levels and three modes of game play.

9. Italy
Deer Hunter Challenge (games)
In this hunting themed game players 'hunt' game such as deer and bears in different locations around the world. Players are rewarded with credits for the distance and difficulty of their kill which can then be used to purchase accessories for their hunting trips.

10. Korea
???? (Movie) for iPad (entertainment)
Roughly pronounced 'QOOK' in English this movie application offers free movies for the iPad. The QOOK movie zone includes over 200 films with a further two new free films being uploaded every week. The app is also linked with movie magazines and allows users to review recently watched films on twitter or Facebook.

*The countries listed are those markets in which the most iOS devices have been sold worldwide. The list of top ten countries is based on AdMob's April 2010 estimate of the worldwide iOS User Distribution.