Thanks for making and sharing this - although I'm surprised it's not a "Show HN" itself!
I was curious about the top post that didn't survive - an HTML5 game called "airma.sh" - and I wanted to check it out. I think I found a working mirror: https://www.crazygames.com/game/airmash
It's possible that this is a different game, but it seems to fit the description.
Interestingly, the person who submitted that post stopped being active on HN after that discussion.