There used to be a "typical" game set up, which I don't know if it was modeled after the board game at the top (and this is back in the mid 2000s)
Anyway, IRC (throw back for those who used to be early computer gamers) had some mafia/werewolf channels, but the main channel with the most activity (the only one that would reach games up to 40-50 people) was mafbot. I played in the mafbot channel probably since I was 12/13, played consistently enough that I moved up in rank to admin, person who owned the bot wanted to hand off the bot and taught me how to run it. So I maintained it until I was like 17/18, when IRC started to die down in popularity for other chat interfaces for gaming.
But people that designed their bots on IRC typically designed it around the same style as mafbot. So the typical set up of it was in a 10 player game, you had 2 mafia, 1 affiliation seer, and 1 doctor, at 13 you added another wolf and a blocker. And it was typically limited to these really basic types of roles. They didn't even include watchers/trackers/etc. But still played mostly vanillas. I changed it up to start adding a Godfather role, lawyer roles, doctors with the ability to poison once you hit a certain number of players, serial killer, I added a tracker, innocent child got added once you started getting really high up in numbers, and then crazier roles like bombs once you got even higher up. It got pretty complicated with the coding behind it, and I had no real grasp on coding at the time, so it did require help from others which limited some of my more grand plans.
Overall was a lot of fun, and it's a very different game when you can real time chat rather than post and respond. Sometimes you don't even have an opportunity to read through everyone's posts, especially in the larger games.
I get that the definition has evolved, especially on places like MU, but it did mean something different in the forgotten past, where old farts like me used to live.