This is a simple and easy introduction to the logic of Sudoku puzzles given a festive Christmas theme. The puzzle is rendered in retro-styled 3D.

• Fill in the grid with Christmas ornaments.
• Each row, column, and square within the grid can only have one of each ornament.
• Finish the puzzle as fast as you can.

It’s Sudoku with a graphical upgrade. Play the classic idle number logic game like you’ve never seen before (probably).

• Play through 3 difficulty levels.
• Choose between the standard 9 x 9 number sudoku or a 4 x 4 picture version.
• Use hints to help you out if you’re ever stuck.

This is a sudoku-based number puzzle game where you must put the right number in every square to fill the entire grid. Just like the classic sudoku game, you cannot repeat the same number across a row or a column. But this has a few different rules from sudoku. It comes with various difficulty modes which change the number of squares per row. The harder the mode, the more squares you must fill out. Each group of colored boxes must also be calculated based on the assigned number and operator. This can be addition, subtraction, multiplication, or division. Supply the correct digits for all the squares before the time runs out.

• Choose between different difficulty modes: Easy, Normal, Hard, and Expert.
• Numbers to write are based on the number of squares per row. Ex. 3 squares per row uses 1, 2, & 3.
• The time limit is based on the difficulty mode. Harder modes provide a few more minutes for solving.
• A colored box group must be solved according to the number and operator assigned in the game.

This is a mathematics and logic game that’s a twist to the traditional Sudoku formula. Numbers must appear only once in each row, column, or box (“blob”).

• Each blob consists of a result number and an operator. The numbers in each box must equal the result number.
• Place in candidate answers as guides while solving each puzzle.
• Use the query button to check if you got it right?

Kaodoku is a visual take on the Sudoku concept. Instead of numbers or letters, Kaodoku focuses on emoji shapes with 3 possible expressions and shapes. All 9 face variations must appear once in every row, column, and square of a 9 x 9 grid.

• Choose between 4 difficulty levels.
• Choose from different mouths and face shapes.
• Use blackboard mode to track your guesses, and greenboard mode to finalize your answers.

Sudoku is a classic logic puzzle game where you must fill in a 9 x 9 grid with the numbers 1 through 9. Numbers shouldn’t appear more than once in every row, column, or box.

• Choose between 4 different difficulty levels
• When in doubt, use the query button to check your answers.
• Place in candidate answers to keep track of your guesses.

Wordoku is a twist on the classic Sudoku formula. The rules are similar, but the numbers are instead replaced with letters that spell out a word.

• Fill in the entire grid with 9 different letters.
• No letter should repeat in any row, column, or box.
• See if you can guess the word in the diagonal before you solve the entire puzzle.

This is a simple no-frills Sudoku game styled after newspaper Sudoku.

• Choose from 4 difficulty levels.
• Use notes and hints to help you through the game.
• Finish the puzzle with fewer than 3 mistakes.

This is a simple, easygoing game of Sudoku. Fill in the entire grid with numbers. You cannot repeat numbers in the rows, columns, or 3 x 3 squares within the grid.

• Choose from 6 different difficulty levels.
• Add notes to keep track of your guesses.
• See how fast you can solve the puzzle.

This is a customizable sudoku game with three grid options and four difficulty levels. Use logic based on the already-present numbers to fill in the entire grid. You cannot repeat numbers in any row, column, or square.

• If you’re stumped, use a hint.
• Don’t make more than 3 mistakes.
• Solve the puzzle as fast as you can.