6 hours of on-and-off casual chatting while working, making dinner, playing with kids, etc. Total time spent in front of keyboard was at most half of that. And would be half of that still, if I had more experience guiding GPT-4o/Aider diffs out of stupid ruts - experience which I gained through this short project.

Also: 6 hours is a lot if you sit down to it and know exactly what to write. Not when you half-remember how the game works, don't have uninterrupted focus time for it, and deal with executive function issues to boot.