Chris Crawford's Game Model

1. Art

2. Entertainment

2.1. Interactive

2.1.1. Plaything

2.1.1.1. Challenge

2.1.1.1.1. Puzzle

2.1.1.1.2. Conflict

2.1.1.2. Toy

2.2. Non-Interactive

2.2.1. Movies

2.2.2. Books