The more I play and create games, the less convinced I am that the difficulty of games should be thought of in terms of a linear or exponential ramp … - Derek Yu

I'm obsessed with finishing as a skill. Over the years, I've realized that so many of the good things that have come my way are because I was able to finish what I started. [...] Irrespective of how big the project was, each one I finished gave something back to me, whether it was new fans, a new benchmark for what I could accomplish, or new friends [whom] I could work with and learn from.

The "joy of discovery" is one of the fundamental joys of play itself. Not just the joy of discovering secrets within the game, but also the joy of uncovering the creator's vision. It's that "Aha!" moment where it all makes sense, and behind the world the player can feel the touch of another creative mind. In order for it to be truly joyful, however, it must remain hidden from plain view— not carved as commandments into stone tablets but revealed, piece by piece, through the player's exploration of the game's rules.

The best metric for scoping a project is not technical skill, but the scope of the previous games you've finished!