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

How to play

The light advances from right to left. Tap each troll to make it run to the cave on the left. Those the light reaches turn to stone. Save nine of the twelve trolls.

The story behind it

In Scandinavian tales, trolls turn to stone in sunlight. It is a common motif; the caves and the race are made up for the game. Read the story in Why trolls turn to stone in the sun: the Nordic belief that teaches how to read the landscape.