Mad Skills Motocross, the side-scrolling racing game from Swedish developer Turborilla, has released two new track expansion packs for the game for iPhone, iPod Touch, and iPad.

Combined with the 52 original levels, and six more free levels, there are now up to 78 tracks on which players can compete against the computer, or against friends via OpenFeint Challenges.

The first expansion pack, ‘Arcade Madness’, includes ten tracks, each with arcade-style power-ups.

The second pack, ‘Real Rhythms’, includes 10 natural tracks with no power-ups.

Included by popular demand, these tracks highlight the superb physics of what many consider the best side-scrolling racing game ever made.

Both track packs feature a challenging computer opponent, or the ability to challenge other friends who have the tracks via OpenFeint.

To access these new tracks, gamers simply need to update to the 1.6 version of Mad Skills Motocross, at http://mad.mx/hcvL6U, and tap the ‘More Tracks’ button on the main menu.

The 1.6 update was released on 9 April. Mad Skills Motocross is available on the App Store now and is compatible with iPhone, iPod Touch, and iPad.

To purchase, go to http://mad.mx/hcvL6U.

For more information, visit the official Mad Skills Motocross for iOS webpage at www.madskillsmx.com.