Solve the puzzles to find the hidden pictures in the grid based on numeric clues. For every clue, there is a block of adjacent cells of that size in that row or column. The only unknown is the amount of empty space between the blocks - maybe before the first and after the last block, too - and that is the logic behind Picross.
Levels are sorted by difficulty, and you have to complete one difficulty to unlock the next one. At the moment, there are 103 levels spread across six difficulties.
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