In an article at 1up.com called "So You Want to Make a Game" several indie developers are interviewed about their craft. I lifted a few quotes from the articles that fall in line with the approach I'm taking with my games and that support the kind of critical-thinking we do here on the blog.
It's important to start a game off at the core by thinking about the core mechanic.
Preece's approach to game developing involves focusing solely on the primary mechanic/function of his game.
As if taking notes straight out of Miyamoto's book, Mak understands the power of making a game around a mechanic that is fun by itself. Once you do that, the game practically makes itself. After all, you don't have to worry so much about making a fun game when simply moving the character around is satisfying.
Many games these days are not only building on "turds," but they're copying and stealing turds from other games. It's a sad cycle. I won't name any names.
There are many mechanics and elements in Neo*RPG and GuitaRPG that I had to let go of as I went along. You can even find little traces of the magic system that I left in Neo*RPG. It's tricky and buggy, so I don't recommend clicking the scroll wheel anytime soon.
Supporting the primary function of the game is ultimately about creating that sense of wholeness, balance, or "equilibrium." If the options and elements that are being added don't enhance the game or primary function in a significant way, then perhaps it shouldn't be added (especially when the game is nearing equilibrium). It takes a lot of skill and experience both for the game maker and the critical-reviewer to bring to the surface and express this balance. Hopefully, by participating in the design challenges on the blog as well as the development of GuitaRPG, you'll becomes a crafter that has a leg up on understanding and explaining the craft.
Game makers have a unique and privileged perspective on games. Just look at the success of Nintendo under the leadership of Satoru Iwata.