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

How to play

The Norse ships flee down the estuary with the tide. Tap a square of water to fire a burning arrow: miss, hit or sunk. Sink all three ships, of four, three and two squares. On the twenty-fifth missed arrow, the tide carries the fleet away.

The story behind it

The Battle of Clontarf was fought in 1014, near Dublin. The ship hunt is made up for the game. Read the story in Clontarf, 1014: the Good Friday battle in which Brian Boru died, and why it was not just Irish against Vikings.