Each player begins with a cup to conceal their dice and 5 dice.
You can go to this page and Roll 5d6 for the outcomes of your 5 dice.
First, every player roll their dice and post what they got in a spoiler like this:
It's against the rules to open the spoilers by other players.
Once everyone has done so, the first played that rolled their dice will make a bid, for how many dice total are showing some value (for instance, "Five 2s" is a bid that there's 5 dice with a face value of 2 on the table.)
The next person on their turn have two options:
1- Bid for a higher number of the same value (say, if "Five 2s" was previously bid, you bid for "Six 2s", or "Seven 2s", etc.), bid for the same number of a higher value (say, if "Five 2s" was previously bid, you bid for "Five 3s", or "Five 4s", etc.), or for a higher number of a higher value (say, "Six 3s", or "Eight 4s", etc.) A reduction in either face value or quantity is never allowed.
2- They challenge the previous bidder. Now everyone checks all the dice under all the cups, if there are at least as many dice with that value as the previous bidder (in the example, there are at least five dice with a value of 2) the bidder wins. If there are less dice of that value than the bidder said, the challenger wins.
And that's it!