How to implement a space shooter with SpriteKit and SWIFT is in the AppStore

The sample game developed in my SpriteKit Tutorial is in the AppStore:

SourceCode: here

A more sophisticate game also based on the tutorial:

Tutorial Overview:

• Part 1: Initial project setup, sprite creation and movement using SKAction and SKConstraint

• Part 2: Adding enemies, bullets and shooting with SKAction and SKConstraint

• Part 3: Adding a HUD with SKLabelNode and SKSpriteNode

• Part 4: Adding basic game logic and collision detection

• Part 5: Adding particles and sound 

• Part 6: GameCenter integration

• Part 7: iAd integration

• Part 8: In-App Purchases