Hello. :D Great post idea.
There's a guy named Mike Rose who discusses this a bit. The most insightful thing I found in his talk is the value of building a community around a game and how that can help the game become more successful.
Viewing post in Getting a game become viral - Ideas Collection
Hmmm… Growing a community is hard. The best examples I’ve seen were either multiplayer games (MMORPGs in general, The Kingdom of Loathing, or Terraria) or singleplayer games that were… not easy to get into and required having a Wiki open (Dwarf Fortress comes to mind). Although I’ve seen user activity in Metroidvania help sites/Wikis and although I’ve contributed to those sites, I wouldn’t call that a community.
So your best bets to grow a community (from my limited perspective) would be to either go multiplayer - or make your game cryptic as fuck. :)