You could check out lemmy.world/c/dragonage? Obviously it's a bit dead at the moment, but this is the thing: all of these little communities need to be restarted from scratch, and to do that you need to contribute your own content until enough people show up that the feed starts rolling on its own. Lemmy.world is currently the biggest instance, and that community has 102 subs already. Seems like a great place to start if you want to recreate r/dragonage on lemmy.