PartyStack

All games · Europe

How to play
Twenty-One

Add one or two to the count. Whoever is forced to say twenty-one loses.

Players
2–12 players
You need
One phone
Origin
Europe
Shelf
Quick rounds

The rules

3 steps.

  1. The first player says one, or one and two.
  2. Each player adds either one or two numbers to the count.
  3. Whoever has to say twenty-one is out, and the next round starts from zero.

The bit everyone gets wrong

This one is solvable. Once somebody spots the pattern they will win every round — the fun is watching the rest of the table work out why.

What the phone does

The phone keeps the running total and offers only the legal steps, so nobody can miscount by accident.

It is a dealer and a scorekeeper, never a judge. It cannot hear the room and it does not decide who was right.

Same engine underneath

If you like this

And 58 more

One phone.
The whole night.

Twenty-One is one game in a library of 59. Finish it and PartyStack names the next one — a different kind each time, so nobody has to go back to a menu.