There’s a new game clone of the 2048 game written in Swift: https://github.com/austinzheng/swift-2048. The author also provides some feedback on Swift:

• Great language, feels like programming in Scala
• misses closure based callbacks for UIKit – selectors seem like a hack in Swift
• private, public, protected for class properties seem missing
• initializing n-dimension arrays is painful
• XCode still very unstable