Tap the game to open it fullscreen. On a computer, Esc exits; on a phone, use the ✕ button.

How to play

Vafþrúðnir plays Nim with you. There are three piles of stones. On your turn, tap a stone to take it, along with those above it, from one pile. Whoever takes the last stone wins the round. Win 2 rounds before losing 2. (Keyboard: arrows to choose the pile and the amount, Space to confirm.)

The story behind it

In the Vafþrúðnismál, Odin beats the giant with a question only he could answer. The game of stones is made up. Read the story in Odin and Vafþrúðnir: the wisdom contest where the head was the stake.