Find of the Day - Broederbund: What makes a good game?

Brenda Romero tweeted the Author's Guidelines by Brøderbund Software from 1984:

What makes a good game?

It's no secret what makes a game stand out as a winner.

Here are some of the key elements we consider when adding a new game to our line:

1. The game should have increasing levels of difficulty.
2. There should be plateaus for the player to reach, each with a qualitative difference, new elements brought into the play, new 'twists' and challenges.
3. When a player suffers a defeat, it should be due to his own actions. Never escalate the difficulty simply by programming in random events a person can't respond to.
4. The game should project a"personality". A good way to do this is to work with identifiable objects rather than abstract shapes.
5. The game should maintain a consistent point of view. Events and displays should add to the sense of reality, not confuse it.
6. The game should make full use of the specific computer's technical capabilities - sound color and graphics.
7. Most important of all, the game should be original, unlike anything else on the market.