An airplane game for iPad with Objective-C, SpriteKit, Xcode 6.1.1 and iOS SDK 8.1 tutorial by Jorge Costa and Orlando Pereira on tutsplus.com
Tutorial
Part 1 Build an Airplane Game with Sprite Kit - Project Setup
Part 2 Build an Airplane Game with Sprite Kit - Enemies & Emitters
Part 3 Build an Airplane Game with Sprite Kit - Explosions & Clouds
Credits
Tutorial and code by Jorge Costa and Orlando Pereira
Game Art by Daniel Ferenčak