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Incase people didn't notice, if you all play on 1 family, it works by a traditional 2 players on the same team answer, and they need 200 points to get the cash prize.
with 2 teams, the last round can be stolen by the losing family can steal the cash prize, but with their score determining the cash ammount x10.
They purposefully gave the other player family a chance, and not just be left out.