inXile Entertainment (the developer of Line Rider) has released an iPhone version of their popular Flash game Fantastic Contraption [App Store].
The game plays similarly to other physics based games such as Crayon Physics but involves more resources to build a machine to propel the target to the goal:
In Fantastic Contraption you build a machine from simple parts to move objects to a goal. There's physics involved but don't worry, just press "Start" and watch what happens! The simple controls and step-by-step tutorial will have you building fantastic contraptions in no time!
The iPhone version includes a build-in editor that allows you to both upload your levels and download new levels from around the world.
The developers have provided us with this trailer video: