The game rules will be negotiated between the players involved before each game. The list below is by no means complete. Rules can be extended and modified as far as the Settler 3 engine allows.
classic rules
90pt all nothing
90 minutes of peace time
All weapons allowed (usually only bows are made)
no thieves, no war machines, no pio-attacks
L2-Rules
As soon as you have level 2 soldiers you are allowed to do everything.