I tried a couple of times to make https://www.reddit.com/r/cuttingedgegaming/ happen, but never reached many people. This community seems to mostly folks playing 1-2 year old games, I wonder if there are more of us who are playing older (but not “retro”) games, particularly PC games?
Many of the best games have communities that last, and even grow, for decades. If you have to buy the game when it comes out to be part of the community, it’s probably not a great game. Check out Factorio or Minecraft for examples of this.