Any time you're learning a new skill, it's helpful to put it into practice as much as possible to reinforce what you've learned. This hour helped to reinforce the game programming knowledge you've learned thus far throughout the book by guiding you through the design and development of the Battle Office game. The game made interesting use of the sprite features in the game enginenot to mention wave sound effects and MIDI music. Hopefully you're starting to get some confidence that you're capable of constructing a complete game of your own creation.
This hour concludes this part of the book. The next part revisits animation and explores some ways to enhance the animation features in the game engine so that you can create even more interesting games than those you've seen thus far.