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10 Best Brain Games Like Sudoku Online (Android & iOS) in 2021

Sudoku is a brain developing game. These kind of puzzle games like Sudoku does not need talent in math. You do not need to do math calculations. The player has to fill a 9*9 grid with numbers to get amounts between1 to 9 in each column, row, and 3*3 units. Some cages in the puzzle are already filled before starting the game. You have to choose the missing numbers logically to fill the puzzle. Autosave feature, various challenging levels, more than three input modes, ranking system, and unlimited undo options are some of Sudoku’s features. You can enjoy the background music, fantastic game mechanics, simple controls, and brilliant graphic details are available in this game. 

What is similar to Sudoku?


Many people love Nonogram games. These puzzle games are originated in Japan. Nanograms are also called Griddlers, Pic a Pix, and Picross. It is an alternative for Sudoku. You have to recreate a hidden picture with the help of given hints. The hints tell you the colors of the blocks in a row or column of a game. Your logical thinking ability will drive you to reveal the whole hidden image. Nonogram games help to improve overall cognitive abilities. 

Website Android IOS

2) Lumosity: Brain Training

Lumosity: Brain Training offers a larger number of games to make you smart. It consists of math games, language games, speedy shape games, and many others. The brain training games help achieve your goals by problem-solving, improving memory, attention, and agility. 

Website Android IOS

3) Crossword Puzzle Free

Crossword puzzle free is brain improving games like Sudoku. It is good for people who like words, testing the ability of problem-solving, and having general knowledge. You can test vocabulary knowledge by playing these games. It is very enjoyable to solve clues. 

There are ample Crossword puzzle games available in the Google Play Store and Apple app store. Most of them are free to install. You can enjoy your free time by playing these games. It will help to improve your logical thinking also. 


4) Tic Tac Toe

Wintrion is the founder of the Tic-Tac-Toe game. It is an intelligent game like Sudoku. You can play this game in your free time. The two players involved in the game are called X and 0. Your opponent player can be either your friend or the computer. The game consists of a 3*3 grid. A player must draw either X or 0 to start the game. Three similar marks must match horizontally, diagonally, or vertically to win the match. Tic-Tac-Toe offers two game modes called AI Mode and Multiplayer mode. 

Android IOS

5) 7 Little Words

Ox Technologies found and published 7 Little Words. It is a single-player word video game. The game includes names of popular brands, animals, famous people, and other things related to day to day life. You have to find the hidden letters of the words. Every puzzle has seven mystery words, seven clues, and twenty letters of the group. No time limit is given to this game. You can move onto the next puzzle after completing all the hidden letters. Various modes like Daily challenge, My Classroom Puzzle, and Expert are available to test your spelling knowledge. 

Website Android IOS

6) SudoCube

SudoCube is a free block game. It has a cool interface and colorful blocks of different shapes. The player has to drag the blocks onto the board. The square of various shapes can fit into the board. This is the key to the game. When you placed the blocks on the board, they can’t be removed. You have to fit blocks having different shapes into a 9*9 grid. This is a classic game. That does not have a time limit. 

There are two options in the game. You can select the breaking of the highest score using repeated rounds or challenge one level per day through the daily challenge. You can win the trophy by completing all the challenges. 

Android IOS

7) Nonograms Katana

Nonograms Katana is a game like Sudoku. It helps to sharpen your mind. Nonogram Katana is a picture logic puzzle game. The hidden picture can reveal by coloring or left blank the cells in a grid according to numbers at the grid’s side. All the puzzles in Nonograms Katana are free. The app is compatible with phones and tablets. You can undo and redo things whenever needed. 

Website Android IOS

8) Wordoku

Wordoku is also called ‘Letter Sudoku.’ It is very much similar to Sudoku. But it offers something more than just Sudoku with words. It has letters instead of numbers. The given letters must be fitted into the 3*3 region, columns, and rows. The diagonal cells from the top left to bottom right should spell a common English word. So it is exciting to fill the puzzle. The game allows you to repeat the same letter in the solution word until the letters are not repeated within the same column, row, or region. This Wordoku app is free to download. 

Website IOS

9) killer Sudoku

Killer Sudoku, or the Sum Sudoku, is a combination of features in Sudoku and Kakuro. The columns, rows, and 3*3 blocks have digits from 1 to 9. The dotted lines indicate cages, and they also contain a set of non-repeating digits. The addition of the digits in a cage gives the sum shown in the clue. 

Website Android IOS

10) Numpuz: Classic Number Games, Free Riddle Puzzle

You can test your mind by playing this game. You have to subtract the numbers from the given tile on the grid to obtain zero. Then you pass to the next levels. You can combine the tiles to make a number that is less than the original tile. And also, you can combine an identical number of tiles to complete the task. The fun part is that you can play the game while listening to background music. It provides smooth controls and attractive visual details. You can improve your brain activities while enjoying the game. 

Android IOS

Does Sudoku make you smarter?

This app is one of the best games for your brain improvement. It helps to increase neuroplasticity in you. So you will able to identify things from different angles and get smart ideas. The Sudoku players will have a different perception than others. 

Is Sudoku good for the brain?

Sudoku is good for your brain. It helps to keep your brain younger. You will stay in shape. Your brain function will keep younger when playing puzzle games like Sudoku. So, your logical thinking will also keep improving. Moreover, your brain will keep active by Sudoku. 

What is the trick to play Sudoku?

Scan rows and columns are the best tricks to play Sudoku. You have to scan each triple box area. You have to eliminate numbers or squares and finding situations where only a single number can put into a single square. This method will help to finish the difficult Sudoku puzzles within a few minutes. 

Are some Sudoku puzzles unsolvable?

No, All the Sudoku puzzles have solutions. Every Sudoku puzzle has a unique solution. If you cannot find a solution to a puzzle, it does not sound as insoluble. You have to try hard. To get the solution to challenging puzzles. 

What is the best free Sudoku app?

Sudoku by Brainium is the best app for android phones. You can learn and improve your skills in Sudoku using this app. It is an attractive, easy to learn, and user-friendly app. You can install this app for free. 

What are the best strategy games like Sudoku?

Many strategy games like Sudoku has developed in recent times. Some of them are seven little words, a ticket to ride, and Splendor. People tend to play these games along with Sudoku. You can choose these strategy games to enjoy your free time. 

What are the best paper games like Sudoku?

Sudoku is a famous paper game. There are many alternative paper games like Sudoku Master, crosswords with friends, and hangman free. You can install these apps onto Android or Ios devices. Try to select the best paper game to play in your leisure time. 

What are the best math games like Sudoku?

There are many math games like Sudoku. A magic square, 2048, Domino puzzle board, Kenken, and Kakuro are the best math games. Kakuro is one of the best alternatives for Sudoku. Kakuro is also called ‘Cross Sums.’ Math games are helpful for students to improve critical thinking and develop multiple skills along having fun. 


Sudoku is the best game to play in your free time. It helps to improve your brain functions and will make you smart. Several smarter brain games like Sudoku have developed in recent times. There is no age limit to play Sudoku and other alternative games. These games make you think logically. Try to play smarter brain games like Sudoku in your free time without wasting time on other addicting games. 

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