If you look around the Internet or even on the Unity Forums you will find all things lumped under Game Design.
Somewhere over the past x number of years people began writing articles about Game Designers without understanding what that actually meant. I think the media is largely to blame.
They wrote things like to become a game designer you need to be a programmer, an artist, be able to design a fun game, create sounds, compose music and market your game.
That is not a Game Designer. That is a lone wolf Game Developer. The bit where they said design a fun game… that is the design part. There are game designers for the overall concept, designers for the play mechanics, designers for the levels.
A sound / music artist is not a game designer… but they can be.
A programmer is not a game designer… but they can be.
So, what is Game Design if it is not Game Development?
Game Design to me is…
Coming up with the general concept for a game, defining the core play mechanics, the ultimate goal(s), the enemies & other obstacles, the secondary and tertiary play mechanics, the victory and failure conditions.
Play Mechanics or Game Mechanics are a primary focus of game design. Put simply, a mechanic is a way the player can interact with the game world.
Jumping is a play mechanic. Collecting coins is a play mechanic. Discovering hidden rooms is a play mechanic. The experience resulting from all of the mechanics is the Game Play Experience. And that is what Game Design is all about.
These days Game Design is often something tacked on as the developers focus on making shiny graphics. Other times a programmer comes up with some cool FX and quickly tries to build a game around it. In my opinion, the game design should come first and be the top priority. It is the most important thing.
What does Game Design mean to YOU?