The Little Crane That Could. It is the most advanced crane simulator game for iOS, offering amazing gameplay.
A realistic physics simulation gives you full control over the crane: rotate, elevate, bend, extend and grapple. It's no walk in the park, no casual game by any means. You'll need to hone your spatial skills before you will be crowned a crane expert. Try it for free at the iOS App Store or the Mac App Store, and discuss it at touchArcade.
UPDATE: The Little Crane That Could has a brand new release on Steam for Win/Mac/Linux.
UPDATE: On dec 5 2012, after 31 days of sales on Google Play, Little Crane now has 1M Android users.
See how the little crane is conquering the world one country at a time. Read what the press has to say about the game, and also the user feedback:
A port of The Little Crane That Could is available on the Mac App Store. The desktop version features exclusive content with a new vehicle and two new levels. You can discuss, or provide feedback on the game at the Touch Arcade forums. The new crawler has an extremely realistic simulation of tracks, as can be seen in the video below. Also, you can play the OSX version of Little Crane with this incredible bad ass controller.