Logic Puzzlesby Spark & Spiral

Logic puzzles

  • Aquarium
  • Binary Sudoku+
  • Color Flood
  • Crowns
  • Cryptograms
  • Daily Logic Puzzles
  • Dominosa
  • Dot Stream
  • Futoshiki
  • Galaxies
  • Calcudoku
  • Kurodoku
  • LITS
  • Logic Grid Puzzles
  • Mine Finder
  • Mosaic
  • Nonograms
  • NoriNori
  • Pipes
  • Renzoku
  • Skyscrapers
  • Slant
  • Sudoku
  • Thermometers
  • Yin-Yang
All logic games →

Word games

  • Final Phrase
  • Medieval Word Twister
  • Word Wheel
All word games →

Card games

  • Euchre
  • Solitaire Pro Collection
All card games →

Printable

  • This week's puzzle pack
  • Logic grid puzzles
  • Crowns
  • Binary Sudoku
  • Aquarium
  • Sudoku
  • Tent Logic
  • Nonograms
  • Calcudoku
All printable puzzles →
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Play Nurikabe Online - Free Island Logic Puzzle

Play Nurikabe puzzles online for free! Shade sea cells to form a connected ocean while isolating numbered islands. No 2x2 sea blocks allowed. 500 puzzles across 3 difficulty levels.

Logic Puzzles

Free, fair, beautifully made logic puzzles. Made in Canada by Spark & Spiral.

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Every puzzle solvable by logic alone.