In the previous chapter, we implemented most of the features of Cube Runner. In this chapter, we will finish implementing the game.

The most notable feature that is missing is collision detection, so we'll start with that in this chapter. As we have already said, when we built Flappy Swift, Game Center support made the game more interesting, so we'll add that to Cube Runner as well.

Let's get started with all of this, and much more, in this chapter.