IMO, a video game that goes to the 1st place on Hacker News' front page has to be clever, not fun. Having this game make a very simple (and typical) use of physics doesn't make it terribly clever.
If you want a "clever" (read: interesting; read again: intellectual; read once more: poignant) game, play Chess, or Stratego, or Risk. If you want a game that's not fun, well, I'd probably just say "lighten up".
The context isn't what games hhm wants to play, the context is what games (if any) hhm wants to see at the top of hacker news.
Exactly. Also, if you want good games, I used to be a games developer so I could post cool & fun games, but that's not the point of hacker news.