I've categorised my assumptions into 7 categories:
- Interaction - The way the user interacts with the game
- Social - The social implications and aspects of gaming
- Distribution - How to buy games and what their formats are
- Properties - Properties of video games
- Content - Common themes and mechanics in games
- Types - Some different types of games (hardly exhaustive)
- Consequences - Some consequences of playing video games. Some of these are proven by studies, some not.