Since Apple's App Store opened in July 2007, France-based mobile game developer Gameloft has sold more than 20 million games on the service built for the iPhone, iPod Touch and iPad.

The company said today that of the 47 iPhone and iPad games they've launched from the beginning of this year, a whopping 42 of them have hit the top five mark on Apple's Top Grossing charts and 25 hit the top spot.

"The first half of 2010 marks a new step for us on the App Store," said Michel Guillemot, president of Gameloft. "The launch of the iPad and iPhone 4 has opened new horizons for developers and allowed us once again to transform our consumers gaming experience. 20 million paid downloads is proof that our games meet the expectations of our players and we will continue to satisfy them."

Gameloft has developed and published more than 100 games for the App Store since its launch in the summer of 2008. The publisher plans to release another 15 games to the store this year, including Assassin's Creed: Altaïr's Chronicles HD, Dungeon Hunter 2, Star Battalion and Modern Combat 2: Black Pegasus.