Free brain games with numbers and words
This is the section for puzzles you solve by deduction or arithmetic rather than by matching colours. The brain games here cover sudoku, logic grids, minesweeper, maths and words. What they have in common is that the answer can be worked out. A correct move is one you can justify from what is on the screen, and guessing tends to cost you.
Brain & Numbers games
Crossmath Challenge
Place number tiles into a crossword-style grid so every equation works, across and down. Undo, Shuffle and a limited Hint.
INCOWORD
Read a nonsense phrase out loud and listen for the real word hidden in its sound. Solo levels of five to ten letters, or race friends.
Logic Islands
Mark cells as island or wall so each island matches its number and the walls stay joined. 240 puzzles across six worlds.
Logic Pro - Neon Edition
Turn every light off, where each tile you press also flips the tiles around it. Fewest moves wins.
Math Box Balance
Swap number blocks between boxes until every box shows the same total. Starts with two boxes and grows to eight.
Math is easy!
Pair red expressions with green answers, from basic sums up to fractions, roots and logarithms, then test your matches.
Minesweeper Infinite
Minesweeper with a Classic mode and an Endless field, where you keep opening cells for as long as you avoid the mines.
Modern Sudoku
A sudoku variant that swaps the usual 9x9 grid for 20 boxes. Fill every gap with 1 to 9 and the board is checked when you finish.
Multiplication Master
Times tables from x2 to x12 across six modes, including Survival, Bomb Mode and Marathon. Points, streaks and a global leaderboard.
Number Arrange
Swap numbered boxes until they sit in the right order, on grids from 3x3 up to 7x7, with a timer and move counter running.
Reach 100 : Colors Game
Slide numbered shapes into each other until every group adds up to exactly 100. Sixty levels.
Remember the numbers
Digits flash up for three seconds, then vanish. Touch where each one was, lowest first, as the sequences get longer.
Stickman Mental Math
Build a sum from numbers and signs to reach the target. Each wrong answer costs the stickman part of his body.
Sudoku for bro
Standard 9x9 sudoku with several difficulty levels, a mistake check, hints and an option to reveal the full solution.
Sudoku Vault
Sudoku on 4x4, 6x6 or 9x9 boards, each with four difficulties. Pencil notes, and a Check button that removes mistakes and locks correct numbers.
Word Game 2026
Trace words through connected letters across more than 1,000 levels, with hints, a letter shuffle and no time limit.
Word Slide Game
Rearrange columns of letters to form words until every tile is used. Six languages with 50 challenges each.
Dechipher
Decode words written in symbols, using a key that pairs each symbol with a letter. You have 1:30.
Math Memory Match
A pairs game where each expression card matches the number card holding its answer. Three lives.
Meow Sudoku
Place cats so each row, column and colour has exactly one, and no two cats touch. Power-ups can place a cat or clear colours.
Minesweeper Deluxe
Find every hidden mine by flipping squares and reading the counts of nearby mines.
Mysterious elevator
Descend a 100-floor tower one maths puzzle at a time, swapping number and sign blocks into working equations.
NG: The Word Search
A word search where hidden words run up, down, diagonally and backwards through a grid of jumbled letters.
Order of Operation Challenge
Timed multiple-choice questions on the order of operations, across Easy, Normal, Hard and Pro modes.
Sokoban Master
Push every crate onto a target without ever pulling one. Stars for efficient solves, plus a Level Editor.
Sudoku 9x9
Classic sudoku on a 9x9 grid with easy, medium and hard levels. Harder settings start with fewer numbers filled in.
Traffic Control Math
Pick correct arithmetic answers to turn traffic lights green and stop the junction jamming. A wrong answer ends the level.
Unite Words
Spot four related words and swap them into one row to make a set, before the timer runs out.
Word Match 3D
Spell the target word by picking 3D letters out of a jumbled pile before time runs out.
Minesweeper Duel
Head-to-head minesweeper: take turns opening cells for points, and lose instantly if you hit a mine.
About brain & numbers puzzles
Sudoku is simple to state. Fill the grid so that every row, every column and every box holds each digit exactly once. Sudoku Vault offers three sizes, 4x4, 6x6 and 9x9, with four difficulties for each, plus Notes for pencil marks and a Check button that clears wrong entries and locks the correct ones. Another sudoku here sticks to the classic 9x9, with more than one difficulty level. Modern Sudoku is the strange one. The developer says it uses 20 boxes instead of 81 cells and does not describe the layout, so working out the shape is part of the puzzle.
Logic Islands is built on Nurikabe, a Japanese grid puzzle. Each number belongs to an island of exactly that many cells, and all the wall cells have to join into one connected network. It has 240 puzzles over six worlds, and each world brings its own rule changes. Minesweeper Infinite adds an Endless mode to the classic board, where each number tells you how many of the surrounding cells hide a mine. There is also a lights-out puzzle with levels that grow harder.
The number games lean more on arithmetic than deduction. Reach 100 : Colors Game has you slide numbered shapes together until each group adds up to exactly 100, over sixty levels, and a finished hundred freezes in place. Other games drill the x2 to x12 times tables or set sums on a crossword-style grid. On the word side, Word Game 2026 has more than 1,000 levels of tracing words through adjacent letters with no time limit. Another word game builds its puzzles on sound and adds a real-time multiplayer mode.
These suit people who like a puzzle with a provable answer and would rather be wrong than rushed. Most can be played with a mouse or a finger. A few, Modern Sudoku among them, also accept the keyboard, which helps if you type numbers faster than you tap them. Frames are mostly landscape format, with a handful of portrait games such as Sudoku Vault and Logic Islands. If one type here is new to you, sudoku is the easiest place to start, because its rules fit in a sentence and every puzzle uses the same ones.