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

How to play

Turn the river pieces, one tap at a time (or use the arrows and Space), until the water runs from the spring to the sea. Three rivers, and little time.

The story behind it

Rollo and his men settled on the lower Seine, and Normandy grew from there. The river puzzle is made up for the game. Read the story in Rollo and Normandy: how a Viking chief received lands from the Frankish king in 911.