This game started with nothing; no graphics, no textures, nothing. It took 2 days to complete with a playable core loop, desktop and mobile optimization, asset pipelines, performance optimization, collision detection, sound affects, music loops, visual affects, onboarding, user progression, saving and loading, menu system, ability to distribute on other platforms, built-in analytics, a full testing suite and extensive documentation.
What if I had a week? or a month? It shows how fast games can now iterate.