Notan, a nonogram
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Arrow keys move. Space fills a square, X marks it empty, Delete clears it, Z undoes. Hold Shift with an arrow to paint. L locks or unlocks the row; Shift+L the column.
New Game+ unlocked
Arrow keys move. Space fills a square, X marks it empty, Delete clears it, Z undoes. Hold Shift with an arrow to paint. L locks or unlocks the row; Shift+L the column.
New Game+ unlocked