Emanuele Feronato has released the entire source code, fully commented, to his game Just Jump, ready packaged to be published to iOS and Android app stores.
"What’s the difference between the game I am going to release today and the original version?
Easy, this version is optimize to run on any mobile device in landscape mode, and it will be published on iOS and Android app stores to show you the entire process.
The game will have a fixed width which covers the entire width of the device, while its height is stretched to cover the entire height of the devices, then floors height is calculated accordingly."