Last month I mentioned a nice beginners tutorial showing how to create a Candy Crush style game in Swift.
Here’s another tutorial providing a fun way to increase your Swift knowledge in the building of a Tetris style game from Bloc.
The tutorial utilizes Swift, and SpriteKit explaining every step along the way going from the setup of your project and loading assets, through to setting up the actual game, and some special effects. Everything is nicely explained a very clean format and allows you to jump between each step along the way.
You can find the Swiftris tutorial over on the Bloc blog.
A nice tutorial for learning some Swift and Sprite Kit basics.