
The old observatory on the moor has gone dark. Match three tiles at the chart table and relight it, one room at a time, until the dome opens to the sky.
Light a room and the next door opens. Lit rooms can always be played again.
Start over? Every room goes dark again.
The gate is open
Pick a tile, then a neighbour. Match three alike.
Out of moves. No lives, no clock. Sit again with a fresh table, or leave and come back later.

Gatehouse · lit
The sky you pick tints this room everywhere in the observatory. Change it whenever you like.

All six rooms lit
The shutter rolls back and the moor goes quiet under the stars. The chart tables stay set if you want another night.
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A free three-in-a-row puzzle game set in an old observatory. No ads, no chat, no accounts and nothing to buy inside the game.
Privacy: we collect nothing from players. No cookies and no tracking. Progress is saved only in this browser. The web host sees basic request info, as every site's host does.
Six more rooms are being drawn: the transit hut, the plate archive and the long telescope gallery. The six rooms here stay free.
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