How do I use the 21 Nim?

Take 1, 2, or 3 stones on your turn. The player who takes the last stone loses. Play against the CPU (Easy or Hard) or pass the device to a friend in 2-Player mode.

Yes, the 21 Nim on ToolHaven is completely free to use. No signup or registration is required.

21 Nim

21 stones on the table. Each turn take 1, 2, or 3. The player forced to take the very last stone loses. Simple rules, deep strategy.

You won

CPU won

How to use

Take 1, 2, or 3 stones on your turn.
The player who takes the last stone loses.
Play against the CPU (Easy or Hard) or pass the device to a friend in 2-Player mode.

Related tools: