# Rovixel

> Free HTML5 browser games for phone, tablet and computer: classic board games against the computer or a friend, puzzles and arcade games. No download, no sign-up.

Each game page has original instructions, separate keyboard and touch controls, tips and answers to common questions. The guides below are plain-Markdown versions of those pages.

## Games
- [Sudoku](https://rovixel.com/sudoku.md): Play Sudoku in your browser with four difficulties, notes, hints and undo. Every puzzle is generated on the fly and has exactly one solution.
- [Block Cascade](https://rovixel.com/block-cascade.md): A calm block puzzle for your browser — combo scoring, a generous undo, and a board that fits a phone or a desktop screen.
- [Dinosaur Game](https://rovixel.com/dinosaur-game.md): Play the dinosaur game unblocked in your browser — jump the cacti, duck the birds, and see how far you can run. No download and no install.
- [Tic Tac Toe](https://rovixel.com/tic-tac-toe.md): Play tic tac toe online for free against the computer on three difficulty levels, or against a friend on the same screen. No sign-up needed.
- [Ultimate Tic Tac Toe](https://rovixel.com/ultimate-tic-tac-toe.md): Play Ultimate Tic Tac Toe online for free - nine small boards inside one big one. Take on the computer at three levels or a friend on the same screen.
- [Mancala](https://rovixel.com/mancala.md): Play Mancala online for free against the computer at three levels or a friend on the same screen. Sow the seeds, capture, and fill your store.
- [Dots and Boxes](https://rovixel.com/dots-and-boxes.md): Play Dots and Boxes online for free on a 3×3, 4×4 or 5×5 grid. Take on the computer at three levels or a friend on the same screen.
- [Checkers](https://rovixel.com/checkers.md): Play checkers online for free against the computer at three levels or a friend on the same screen. Standard rules with forced captures and kings.
- [Star Battle](https://rovixel.com/star-battle.md): Play Star Battle online for free — place stars so every row, column and region has the same number, with no two touching. Daily and unlimited puzzles.
- [Word Ladder](https://rovixel.com/word-ladder.md): Play the word ladder game online for free — turn one word into another by changing one letter at a time. A daily ladder, unlimited new ones and 3, 4 or 5 letter words.
- [Chinese Checkers](https://rovixel.com/chinese-checkers.md): Play Chinese Checkers online for free against the computer or friends on one screen. 2, 3, 4 or 6 players on the classic star board, with jumps, chains and three levels.
- [Hangman](https://rovixel.com/hangman.md): Play the hangman game online for free. Guess the word one letter at a time across seven topics and three levels, or play 2 player and set a secret word for a friend.

## Guides
- [Endless Runner Games: How the Genre Works and Where to Play](https://rovixel.com/dinosaur-game/endless-runner-games.md): Dinosaur Game — What makes an endless runner work, why one input is enough, and the free browser runner games you can play right now — no download, no account.
- [How to Play Checkers: Rules, Kings and Winning Tips](https://rovixel.com/checkers/how-to-play.md): Checkers — Checkers rules made simple — the setup, how pieces move and capture, forced jumps, kings, how to win, and the beginner strategy that wins more games.
- [How to Play Chinese Checkers: Rules for 2 to 6 Players](https://rovixel.com/chinese-checkers/how-to-play.md): Chinese Checkers — Chinese Checkers rules made simple — setup for 2, 3, 4 or 6 players, how steps and chain jumps work, how to win, and what happens when a marble blocks your corner.
- [How to Play Mancala: Rules, Captures and Strategy](https://rovixel.com/mancala/how-to-play.md): Mancala — Mancala rules explained simply — the board, how to sow seeds, extra turns, captures, how the game ends, and the opening move and strategy that win more games.
- [How to Play Sudoku: The Rules and the Techniques That Work](https://rovixel.com/sudoku/how-to-play.md): Sudoku — Learn how to play sudoku from scratch — the three rules, how to scan the grid, and the beginner techniques that solve most puzzles without guessing.
- [How to Win at Tic Tac Toe (and Why Perfect Play Always Draws)](https://rovixel.com/tic-tac-toe/how-to-win.md): Tic Tac Toe — How to win at tic tac toe (noughts and crosses) — the best first move, what to do going first or second, and the fork trick your opponent cannot block.
- [Queens Puzzle: Play Unlimited Queens Games Online](https://rovixel.com/star-battle/queens.md): Star Battle — Play the queens puzzle online for free — one crown in every row, column and colour region, never touching. A daily puzzle plus unlimited new ones.
- [Printable Sudoku Puzzles](https://rovixel.com/sudoku/printable.md): Sudoku — Print free sudoku puzzles at home — easy, medium and hard grids with answer keys. Generate a fresh set in your browser, then print. No download, no sign-up.
- [Tic Tac Toe 2 Player: Play With a Friend on One Screen](https://rovixel.com/tic-tac-toe/2-player.md): Tic Tac Toe — Play tic tac toe 2 player on one phone, tablet or computer. The board opens in 2-player mode, keeps score for X, O and draws, and needs no sign-up.
- [Hard Sudoku: Play Hard and Expert Puzzles Online](https://rovixel.com/sudoku/hard.md): Sudoku — Play hard sudoku online for free. Pick Hard or Expert for fewer given numbers, then use the techniques below to solve tough grids without guessing.

## About
- [Site guide](https://rovixel.com/index.md): what Rovixel is, every game and page, leaderboards and contact.

## Optional
- [Full guide](https://rovixel.com/llms-full.txt): every guide in one document.