gugliandalf wrote:

Now he has some search to indicate this
http://img267.imageshack.us/img267/9830/fuelduration.jpg
I generated this table using all the finished games I collected during the Campaign. This includes *all* BlueMax games played during these months, including non-campaign games, leagues, challenges, etc.
You can see in the table both the duration (measured in days from creation to end of game) and also how many games were collected with that NumberOfPlayers/Fuel combination.

Actually, in my opinion, there isn't enough data to give a final answer. Only on 2-players with fivefold fuel there is a shorter duration with "many games to prove it".
However, what *might* be already clear is that *there is no big increase* in the game duration: i.e. twice or fivefold fuel games will not last twice or fivefold the normal duration! Actually they just seem to last about the same number of days.