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Take a break and play free online games at HowStuffWorks. Let's see how fast you can solve our sudoku and crossword puzzles. Are you clever enough to figure out our logic games and riddles?

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See if you can figure out this fun riddle at HowStuffWorks!

See if you can figure out this fun riddle at HowStuffWorks!

See if you can figure out this fun riddle at HowStuffWorks!

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Combining our favorite HowStuffWorks reads with brainy clues, try out our pet themed crossword puzzle!

See if you can figure out this fun riddle at HowStuffWorks!

See if you can figure out this fun riddle at HowStuffWorks!

See if you can figure out this fun riddle at HowStuffWorks!

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See if you can figure out this fun riddle at HowStuffWorks!

Combining our favorite HowStuffWorks reads with brainy clues, try out our music themed crossword puzzle!

See if you can figure out this fun riddle at HowStuffWorks!

Updated weekly, our crossword combines our favorite HowStuffWorks reads with brainy clues!

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Updated twice a week, our free online crossword puzzles combine our favorite HowStuffWorks reads with brainy clues! And no registration is necessary.

Updated weekly, our crossword combines our favorite HowStuffWorks reads with brainy clues!

Updated weekly, our mini crossword combines our favorite HowStuffWorks reads with brainy clues!

Updated weekly, our crossword combines our favorite HowStuffWorks reads with brainy clues!

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Combining our favorite HowStuffWorks reads with brainy clues, try out our space-themed crossword puzzle!

See if you can figure out this fun riddle at HowStuffWorks!

See if you can figure out this fun riddle at HowStuffWorks!

See if you can figure out this fun riddle at HowStuffWorks!

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Try our fun and brainy Space Invaders mini crossword by HowStuffWorks!

Play our brainy animal-themed crossword by HowStuffWorks!

Are you a numbers whiz? Try our online and interactive sudoku puzzle!

See if you can figure out this fun riddle at HowStuffWorks!

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Play our interactive sudoku puzzle by HowStuffWorks!

Play our fun and brainy crossword by HowStuffWorks!