A series of numbers defines the grid — use only logic to uncover the hidden patterns in these nonogram-style puzzles.

Find the unique combination of numbers that will satisfy all sum requirements, both across and down. Use pure logic to find your way!

Sort all 52 cards into four foundation piles by suit. Use the four free cells to shuffle tricky cards out of the way as you find your path to victory.

Solve this Sudoku-like puzzle by satisfying various greater- and lesser-than relationships peppered throughout the grid.

Use falling letter tiles to create the longest words you can find. Level up with special tiles for points multipliers and extra points.

More than fifty thousand different sudoku puzzles, ranging from very easy to fiendishly difficult. Hints are available if you get stuck!

Find matching pairs of tiles and acquire bonus multipliers along the way to clear the board as fast as possible without getting stuck! Thousands of unique puzzles.

The scrambled letters of a famous quotation are provided in columns above a grid. Drop each letter into the grid to reveal the hidden quote!

Connect a network of islands with bridges using pure logical deduction. Every island must be reachable from every other island.

Can you crack the code? Each puzzle presents an encrypted quotation — use pattern recognition and common sense to reveal the hidden quote.

Can you reveal the hidden word or phrase before the hangman finishes his grisly work? Thousands of puzzles across many categories.

Find the hidden fleet of ships on each game board using only the pointer numbers on the edge of the grid.

Draw a single continuous loop on a grid using nothing but numbered clues and pure deduction. The loop must be a single unbroken path.

Swipe, match, and watch the colorful candies fall in explosive chain reactions. Compete for daily, weekly and monthly high scores!

As park ranger, lay out tents around each tree while adhering to the numerical requirements for each row and column.

Solve thousands of unique jigsaw puzzles across all sizes and difficulty levels. Compete for the Jigsaw Puzzle Hall of Fame!

A mix between a crossword puzzle and a cryptogram. Gradually reveal the hidden quote by solving a series of crossword-style clues.

Place lasers on the grid so every empty square is bathed in green laser light. Compete for the Lasergrid Hall of Fame!

Whether you know them as Calcudoku, Mathdoku or KenKen, thousands of unique puzzles for you to solve, ranging from 4x4 to 9x9.

A mix between a logic puzzle and a word search. Given a series of words and a partially-filled grid, place each word so every square is used.

Discover the unique layout of polyominoes that will satisfy the given grid. Compete to make it into the Fillomino Hall of Fame!

Prefer solving your puzzles the old-fashioned way, with pencil and paper? Crosswords, acrostics, cryptograms, logic puzzles, sudoku and more!

Find the combination of arrows that uniquely solves each grid, without crossing any two arrows or leaving empty squares.

A cross between a math puzzle and a logic problem. Enter numbers so each cell equals the sum of adjacent cells, without repeats in a section.

You've woken up in a strange room! Push each box to an open pressure-plate to escape, but plan carefully so you don't trap yourself.

Shuffle around each two-letter tile on the gameboard until every row and column forms a valid word.

Want a quick crossword fix? Clues are given and a new letter revealed every 5 seconds. Can you solve it before time runs out?

You're given wires, lightbulbs and a battery. Connect all the lights and wires to the battery to electrify the circuit, without loops.

Find a series of related words in a grid of letters. Play for fun or compete with others in timed games to make it into the Hall of Fame.

Find as many valid English words as you can by combining contiguous letters on a 16 or 25-letter board. Rare words earn extra points!

Try your hand at more than 200,000 trivia questions across nearly two-dozen different categories. Compete to make the Hall of Fame!

Take a simple set of clues and match up every item in four different categories using nothing but pure logical deduction.

Put your detective skills to the test to break up a conspiracy! Use pure logical deduction and spatial reasoning.

Fill the grid with stars so each row, column and shape contains a specific number — and no two stars ever touch, even diagonally!

Solve simple crosswords without ever reading a clue! We give you three letters to start off — use pattern recognition to fill in the rest.

Connect each set of colored numbers without crossing any paths or leaving any empty squares on the grid. Every puzzle has one unique solution.

Our newest arena for casual word games, card games, brain games and lots more! Play for fun or compete with players from around the world.