Creatures of the night
move only in the dark. Your beam freezes whatever it touches and slowly burns it.
Drag (or move the mouse, or press A / D) to turn the lamp. Burned creatures leave embers: fill the glow ring around the lamp to choose an upgrade.
If a creature reaches the tower it claws at the flame. Survive 3:00 to light the next island, and spend embers in the workshop between nights.
Creatures