Picross DS
Successfully complete forty puzzles in Free mode to unlock Level 5.
Successfully complete fifty puzzles in Free mode to unlock Level 6.
Successfully complete forty puzzles in Normal mode to unlock Level 5.
Successfully complete fifty puzzles in Normal mode to unlock Level 6.
Successfully complete sixty puzzles in Normal mode to unlock Level 7.
Successfully complete seventy puzzles in Normal mode to unlock Level 8.
Successfully complete eighty puzzles in Normal mode to unlock Level 9.
Successfully complete ninety puzzles in Normal mode to unlock Level 10.
Play Today's Picross at least once a day for seven consecutive days to unlock Find mode in Today's Picross.
Play Today's Picross at least once a day for three consecutive days to unlock Not X mode in Today's Picross.
Use the following trick when solving a puzzle with a 10x10 grid:
If a column or row has a "10", you can automatically fill in the entire column or row.
If a column or row has a "9", you can automatically fill in the center eight blocks of that column or row.
If a column or row has a "8", you can automatically fill in the center six blocks of that column or row.
If a column or row has a "7", you can automatically fill in the center four blocks of that column or row.
If a column or row has a "6", you can automatically fill in the center two blocks of that column or row.
