English⌄Standard · Optical illusions
The library with no up
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Optical illusionsWarm library with impossible staircases and readers on floors, walls and ceilings
12 · 24 · 48 · 100 · 252 · 500
0 / 12 placed
Progress is saved automaticallyBackground helpTurn it off for an extra challenge.
100 puzzle pointsPoints depend only on the number of pieces
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Keyboard: focus the play area, use the arrow keys to move the selected piece and press Enter to place it.