[johnnyo]

There are bunch of tabletop wargames, but Warhammer has the network effect going for it.

If you want to go the local hobby store and play a game, most other people are playing Warhammer, that’s what you play too.

You might prefer Bolt Action, but if nobody else in town has a Bolt Action army, it’s an uphill climb.

I recently attended a big Wargaming convention. While all sorts of games were present and being played, 40K has orders of magnitude more people playing it.