
Free
About
Fill-Ins are like crosswords, but with words instead of clues. Use logic and vocabulary to fit all words into the grid. Simple to learn, challenging to master!
MASSIVE PUZZLE COLLECTION
• 2000+ handcrafted puzzles - 600+ each at Easy, Medium, and Hard
• Months of gameplay without repetition
• Progressive difficulty from relaxing to brain-bending
HOW TO PLAY
You get a grid and a word list. Your challenge: fit every word perfectly into the grid using logic and deduction. Start with unique-length words, then solve intersections. No clues needed - just your brain!
FEATURES THAT HELP YOU SOLVE
• Undo mistakes anytime
• Auto-save keeps your progress safe
• Track completion across all 2000+ puzzles
PERFECT FOR EVERYONE
• Easy: Relax with straightforward grids and varied word lengths
• Medium: Sharpen your skills with trickier patterns
• Hard: Expert-level challenge with similar-length words
PLAY ANYWHERE
• Full offline support - no internet required
• Clean, focused interface
• Works beautifully on all iPhone and iPad sizes
Also known as Word Fit, Kriss Kross, or Criss Cross puzzles, fill-ins combine vocabulary building with logical reasoning. Whether you're a crossword fan looking for something new or a puzzle lover seeking your next addiction, Fill-Ins delivers premium brain training.
Download now and discover why millions love fill-in puzzles!
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What's New in Fill
1.0
March 13, 2026