I’m a casual Half Life enjoyer. Spent some time on the subreddit and man is it off the wall.
Tunic has an interesting fandom. That writing system has inspired a lot of cool stuff. The subreddit is censored six ways from Sunday because of how spoiler-sensitive the game is, but I have to wonder what random passers-by must think.
The Undertale fandom has permanently put me off trying the game. It’s not really my kind of game anyway, but I enjoy the soundtrack.
Minecraft has to have had the biggest demographic shift in its player base I’ve ever seen. I bought the game when it was in beta. Most fans were adults who were able to give a random Swede 20 bucks via PayPal. After the game’s release, and especially after the console ports and eventual MS buyout, the average age got younger and younger. I miss the old Minecraft forums.
A lot of indie games have amazing communities. Stardew Valley, Kerbal Space Program and Deep Rock Galactic, to name a few. Non-competitive games with active and friendly developers tend to have good fanbases.
On the other hand, a lot of indie games have incredibly toxic and user-hostile communities. Competitive games especially, though you’ll also see it when the community becomes upset with the developer (such as 7 Days to Die and pre-redemption No Man’s Sky).
And then there are the external factors. A game could become a meme or get covered by a pure cinnamon roll of a streamer and gather a wholesome fanbase despite its content (Doom 2016 comes to mind), or an existing friendly community could get overshadowed by a bunch of 4chan rejects if the wrong YouTuber covers the game (see any semi-obscure game reviewed by SsethTzeentach - I’m still upset about Starsector).