Nat and pit
The playing team has to score more than the opponents. If it doesn't, it goes wet (nat). Win every trick and you have pit.
Updated
Going wet (nat)
The playing team has to score more points than the opponents, card points and roem combined. If it scores fewer points, or exactly the same, it goes wet: the opponents get all the points of the round, including all roem.
Example: wet
Your team plays and scores 70 points. The opponents score 92, roem and last trick included. 70 is less than 92, so you go wet and the opponents get all 162 points.
Example: a tie
Your team plays and scores 81, the opponents score 81 too. With a tie the playing team also goes wet. You really have to score more.
Pit (sweep)
If one team wins all eight tricks, it has pit. That is worth 100 extra roem, on top of the 162 points and the roem in the tricks. The defending team can get pit too.
Making them go wet
As the defending team you try to make the players go wet. Watch the roem: a trick with a run or a stuk can make all the difference.
FAQ
Questions
Do you go wet with a tie?
Yes. The playing team has to score more than the opponents; with a tie it goes wet.
How much is pit worth?
100 extra roem, on top of the card points and the last trick.