Chroma Rush: Color Card Challenge
An original colour-and-number matching card game. Match the pile, play action cards and…
Free brain-training games
Train your brain with games worth playing
Sudoku, logic puzzles, memory challenges, card games and strategy classics — all original, all free, and all playable instantly in your browser.
- No sign-up or download
- Easy to Expert levels
- Progress saved on your device
Choose your challenge
Five categories, each with games that get genuinely harder as you improve.
Brain & Logic Games
28 games of memory, deduction and quick thinking — from Minesweeper and Star…
28 games Sudoku Games16 Sudoku-style games: classic 9×9, 6×6 and 4×4, plus Killer, Jigsaw, Diagonal…
16 games Card Games16 card games: Klondike, Spider, FreeCell, Pyramid and eight more solitaires…
16 games Puzzle Games24 puzzles: word games, Number Merge, Liquid Sort, Parking Escape, Box Pusher…
24 games Strategy & Board Games18 games against a computer opponent: Reversi, Checkers, Connect Four, Nine…
18 gamesContinue playing
Games you played recently on this device.
Featured games
Our editors' picks: the games we think show off Game Oix best.
Chroma Rush: Color Card Challenge
An original colour-and-number matching card game. Match the pile, play action cards and…
Classic Sudoku
The classic 9×9 number puzzle with notes, hints, undo and mistake checking. Every puzzle…
Memory Match
Flip cards two at a time and find every matching pair in as few moves as possible. Grids…
Sliding Number Puzzle
Slide the tiles into order from 1 upwards. From the 3×3 "8 puzzle" to a 6×6 challenge —…
Connect Four
Drop discs and line up four in a row before the computer does. The Expert opponent…
Checkers
Classic American checkers with forced captures, multi-jumps and kings, against a computer…
Klondike Solitaire
The classic patience game: build four foundations from Ace to King by moving cards…
Logic Grid Puzzle
Use the clues to work out who owns what. Every puzzle is generated with exactly one…
Daily Brain Challenge
One fresh 9×9 Sudoku every day — the same puzzle for every player. Solve it to start or extend your daily streak.
Sudoku spotlight
Classic Sudoku
The classic 9×9 number puzzle with notes, hints, undo and mistake checking. Every puzzle has exactly one solution.
Play Sudoku Beginner guide
Puzzle of the day
Lights Out
Each press toggles a light and its four neighbours. Turn every light off — every board is guaranteed solvable.
Play nowBrain & Logic Games
See all 28
Sudoku Games
See all 16
Card Games
See all 16
Strategy & Board Games
See all 18
Most played games
Ranked by real plays recorded on Game Oix.
New on Game Oix
The latest additions to the collection.
Recommended for you
Based on the categories you play most on this device.
How it works
Getting the most out of brain games
Pick a category
Start with what you enjoy — numbers, words, cards, pictures or board strategy. Enjoyment is what keeps a habit going.
Find your level
Begin on Easy or Medium. If you win without thinking hard, step up; if you rarely finish, step down.
Play little and often
Ten to twenty focused minutes most days beats an occasional marathon. The daily challenge makes that easy.
Mix it up
Rotate between logic, memory, spatial and strategy games so you keep meeting new kinds of problems.
About Game Oix
A home for thoughtful games
Game Oix is a free collection of original browser games built around one idea: games that make you think. Every puzzle and strategy game on the site was written specifically for Game Oix, from the Sudoku generator that checks each grid has a single solution to the computer opponents that genuinely search ahead before they move.
Over 100 games in five categories. Brain & Logic games train memory, attention and deduction, from Minesweeper and Star Battle to N-Back. Sudoku games range from a gentle 4×4 introduction to Killer, Jigsaw, Diagonal and Sandwich Sudoku, plus Kakuro and Skyscrapers. Card games — Klondike, Spider, FreeCell, Hearts and more — mix luck with real decisions. Puzzle games include word games, Liquid Sort, Parking Escape, Box Pusher and jigsaws. Strategy games pit you against a computer opponent in Reversi, Checkers, Nine Men's Morris, Hex, Battleship and more.
Difficulty that means something. Easy really is easy, and Expert really is hard. Many games also have ten levels inside each difficulty, so there is always a next step. Your best times, scores, levels, ranks and achievements are saved in your own browser — no account, no email, no download.
Honest about brain training. We think puzzles are an excellent way to practise focus, logic and planning, and you will get better at the games you play. We don't claim they will raise your IQ. Our guides explain techniques we use ourselves and are clear about what the research does and doesn't show.
Built for every screen. Every game works with a mouse, a keyboard or a touch screen, and loads in moments. Start with the Daily Brain Challenge, or browse all games.
Guides & strategy
Practical articles to help you solve faster and play smarter.
Brain Training Habits How to Choose the Right Difficulty Level for Brain Games
Too easy and you learn nothing; too hard and you give up. Here's a simple, practical way to find your ideal level in each game — and know when to…
Brain Training Habits Common Puzzle-Solving Mistakes and How to Avoid Them
Guessing, tunnel vision, trusting bad notes, rushing and skipping the review — the mistakes that hold solvers back in every kind of puzzle, and…
Brain Training Habits How to Build a Sustainable Daily Brain-Training Routine
The best brain-training routine is one you actually keep. Here's how to design a short, varied, enjoyable daily habit — and how to stop it becoming a…
Frequently asked questions
Are the games really free?
Yes. Every game on Game Oix is free to play in your browser. There are no downloads, no accounts and no in-game purchases. The site may show clearly labelled advertising to cover its costs.
Do I need to create an account?
No. You can play everything as a guest. Your progress, best scores, levels and streaks are saved in your browser on the device you are using.
Why did my progress disappear?
Progress is stored only in your browser. Clearing browser data, using a private window or switching to another device or browser starts fresh. You can see what is saved on the My progress page.
Do the games work on phones and tablets?
Yes. Every game supports touch controls and adapts to small screens. Most also have full keyboard controls on desktop.
Will brain games make me smarter?
You will reliably get better at the games you practise, and many people find puzzles a satisfying way to exercise focus and logic. Research on broad improvements to everyday intelligence is mixed, so we prefer to promise enjoyment and practice rather than miracles.
How is difficulty decided?
Each game changes something meaningful: fewer starting clues in Sudoku, bigger grids in logic and word puzzles, and deeper search for computer opponents. Several games also have ten levels within each difficulty.
Is every puzzle solvable?
Yes. Sudoku and logic grid puzzles are checked to have exactly one solution, sliding puzzles and Lights Out boards are scrambled with legal moves, mazes are fully connected, and chess puzzles are verified by an engine. Golf Solitaire is the exception: like the traditional game, some deals cannot be cleared.
How can I report a bug or suggest a game?
Use the contact page. Tell us the game, your device and browser, and what happened. We read every message.
Ready for today's challenge?
Every game on Game Oix is free, runs in your browser and saves progress on your device. No account needed.
Start playing