The Final 10%

Have you ever heard of the 80/20 rule?

It states that 80% of most effects are caused by just 20% of the possible causes.

It is known as the Pareto Principle, named after Vilfredo Pareto, an Italian scientist who postulated a mathematical distribution to describe many social and natural phenomena.

Some examples:

  • 20% of the clients of a company account for 80% of its revenues
  • 80% of a company's sales come from 20% of its products
  • 80% of global world wealth is owned by 20% of the population
  • 80% of crimes are committed by 20% of criminals
  • 20% of the posts on social networks generate 80% of traffic

It is obviously a rule of thumb, but you'd be surprised how accurate it can be!

In fact, we can safely state that:

"80% of a game is ...

Get Practical Game Design now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.