[b0rsuk]

While technically correct, first person shooters might be the most popular multiplayer genre. In practice it's more accurate to says special cases are the games which do no qualify to the categories you outlined above.

As for turn-based games, they work better as board games unless you have a pandemic going on. In theory simultaneous turn games are possible but rarely observed in practice. Dominions games, Laser Squad Nemesis, etc. Sequential turns (A/B/C/D) scale very badly and human face to face contact makes up for that.