Originally Posted by khaight 
Don't get me wrong — I'm about halfway through Portal 2 and it's a fantastic game. But it scratches a different itch. I'd really like to see what would happen if GladOS and Shodan got together and went bowling.
I thought TW2 = The Witcher 2, and TWII = Two Worlds II. (I hope they make a sequel, and I *really* hope they call it "Three Worlds III".)
I never liked the game enough to play it. Seriously I haven't played a Valve game since half-life 2. There recent games lack any resemblance to there earlier titles. I guess making money off steam and co-op games is there prerogative now. Now there saying they will focus on co-op and phase out isolated single player in there games. I'm not one who like co-op or multi-player.
As for the naming think of the confusion you will miss then TW3 is it Witcher or Two Worlds. Maybe the next one should be called 2W3.