Finish it

Finishing is a separate skill, and a finished mediocre game proves more than a brilliant fragment. Projects die in two loops: the restart loop (skills improved mid-project, so the dev remakes early content sideways forever — "your code will always be a mess") and the polish loop (near-done, endlessly refining details out of fear of judgment). Diagnose the loop before intervening. And remember: the last 10% is really 90% — menus, death states, audio plumbing, deploy are the game too.

Scoping a new game (so this skill is never needed)