You are correct that the game works fine with more players. In fact, I think the game is BETTER with more players. You are also correct that the time gets messed with when there are more players.
There is usually enough time to ask about 20 questions during the 2 minute "question asking" rounds (Of course, this depends on the players). This means the game works best with:
3 players = 4 question tokens each
4 players = 4 question tokens each
5 players = 4 question tokens each
6 players = 3 or 4 question tokens each
7 players = 3 question tokens each
8 players = 2 or 3 question tokens each
9 players = 2 question tokens each
10 players = 2 question tokens each
Alternatively, you could add more time to each round using the same math (about 10 questions can get asked in a minute).
I hope this helps!
Thanks for the speedy reply, i will likely reduce the # of question tokens with more players. I bought this mostly b/c i was having a dinner party with non-hardcore gamers who did in turn want to game, and we were more than the typical max of players "5". So cluzzle worked out really well, everyone enjoyed it and i'm looking forward to another round.