iMario Lite and Jungle Crash Land are the most popularly downloaded free iPhone applications for the week of January 18.

The top free application by country* for the week, by number of downloads, recorded on January 18:

1. US
Dark Nebula (Games)

Dark Nebula is an accelerometer-controlled ball-rolling game. Players have to test their skills and agility by guiding a ball through a maze-like world of platforms, sliders and power-ups. The ball is moved by gently tilting the device left, right, forward and back, keeping a careful eye on the frequent hazards.

2. UK
Bungee Stickmen - 2010: Space Edition {FREE} (games)

Bungee Stickmen is a physics-based game. Players try to stop the rudimentary stick figures from plunging to their death by calculating the length of the bungee rope and helping the stickmen to dive off high platforms. Players compete against their best scores in 180 different jumps.

3. France
iMario Lite - Super Mario Sounds (entertainment)

iMario Lite is a collection of nine different Super Mario Bros-inspired sound clips. The 1-Up Mushroom, fireball, brick smash and invincible star noises are among the sounds included.

4. Canada
Jungle Crash Land (games)

Jungle Crash Land game is a new aircraft-flying game. Players have to make a clear landing spot in the jungle by clearing away any obstacles that might be in their flight or landing path. Once all the trees, rocks and other obstacles are out of the way, players can land their plane. Dropping bombs from higher levels helps players earn more points.

5. Germany (lifestyle)

The application is a mobile version of Amazon's German language marketplace. Users can browse products, compare prices, read customer reviews, upload personal product photos or make an online purchase right from inside the app.

6. Australia
Jungle Crash Land (games)

See "Jungle Crash Land."

7. Japan
Cool Wallpapers & Backgrounds Free (entertainment)

Cool Wallpapers & Backgrounds provides users with access to more than 15,000 different iPhone wallpapers. Each image can be downloaded and added to your repertoire of iPhone backgrounds. The images are sorted into categories or users can shake the phone to bring up a random image.

8. Italy
eWiFi (utility)

eWiFi lets you search for free, open WiFi connections in your vicinity. The application scans through all WiFi access points (including secured and ad-hoc connections) and can automatically connect to any suitable open networks.

9. China
Antrim Escape (games)

Antrim Escape is a problem-solving application where players have to find clues, solve puzzles, make educated guesses and pick up hidden objects in order to escape from the castle they are trapped in. Players can use the objects they find within the rooms to help them in their quest.

10. Netherlands
iMario Lite - Super Mario Sounds (entertainment)

See "iMario Lite - Super Mario Sounds"

(*The countries listed are those markets in which the most iPhones and iPod Touches have been sold worldwide. The list of top ten countries is based on AdMob's November 2009 estimate of the worldwide iPhone and iPod touch User Distribution)