• What is the game going to function around?
• What choices can the player make?
• What is allowed within the game?

• What is the overall look and feel?
• The heart of the game.
• The player should always be able to recognize your game by this peice.

• The look of the game is just as important as it's theme.
• Close attention to detail.
• Is this immersing the player in the experience?

Ask yourself these questions before every commit.