Ideating a Computer Game Project

1. Marketability

1.1. How could I market this game?

1.2. Would people buy this game?

1.3. Could I update this game after release?

2. Fun

2.1. Would I enjoy playing this game if someone else made it?

2.2. Does the concept of the game sound appealing?

2.3. Is this a game I would enoy playing even as a prototype?

3. Achievability

3.1. Is this project something I can realistically complete?

3.2. How long will it take me to complete this project?

3.3. Would I hate working on this game by the time it's done?