20×20 nonograms

20×20 nonograms are big puzzles with detailed pictures. Work around the edges first and look for long runs.

Each number is a run of filled squares in that row or column, in order, with at least one empty square between runs. Fill squares with Fill, and mark squares you know are empty with ✕ Mark (or right-click). Drag to fill several in a line. How to play

All 20×20 puzzles

Pick a puzzle. A ✓ means you have solved it in this browser.

• #1 · Objects20×20 · Hard
• #2 · Animals20×20 · Hard
• #3 · Space20×20 · Hard
• #4 · Objects20×20 · Hard
• #5 · Objects20×20 · Hard
• #6 · Animals20×20 · Hard
• #7 · Animals20×20 · Hard
• #8 · Nature20×20 · Hard
• #9 · Animals20×20 · Hard
• #10 · Animals20×20 · Hard
• #11 · Objects20×20 · Hard
• #12 · Symbols20×20 · Hard
• #13 · Food20×20 · Hard
• #14 · Symbols20×20 · Hard

Colour 20×20

• #1 · Animals20×20 colour · Hard
• #2 · Objects20×20 colour · Hard
• #3 · Space20×20 colour · Hard
• #4 · Animals20×20 colour · Hard

Download all 20×20 puzzles as a printable PDF (with answer keys).