Whatajong — Play Whatajong Online Free
Open-source mahjong solitaire in pure TypeScript — match free tiles and dismantle the classic turtle layout.
Whatajong is open source (MIT) by masylum; the project's official site is embedded unmodified.
Keyboard Controls
| Key | Action |
|---|---|
| Mouse | Select tiles |
| Board menu | New game, shuffle, and undo |
Quick Answer
Whatajong is a free, open-source mahjong solitaire game (MIT, TypeScript) — match pairs of free tiles to clear the classic turtle layout, entirely in your browser with no download and no account. Looking for more layouts and hints? We also have our own Mahjong Solitaire on this site.
How It Works
Click Launch to load the board
Click a free tile, then its matching pair to remove both
A tile is free when its left or right side is open and no tile lies on top
Clear every tile to win; shuffle if the board dead-ends
Key Facts
- Open-source (MIT) TypeScript implementation
- Classic rules: only free tiles can be matched
- Loads instantly — a lightweight, no-frills build
- Runs fully client-side; nothing uploaded
- From the early-2010s wave of open-source web games — stable and simple
Frequently Asked Questions
What is Whatajong?
Whatajong is an open-source mahjong solitaire game built with TypeScript in the early 2010s and still playable today. It implements the classic rules: tiles are stacked in layered layouts, and you can only remove tiles that are free — unblocked on the left or right and uncovered — by matching them with an identical partner. It is MIT-licensed.
Is it the same as your Mahjong Solitaire game?
Same genre, different games. Our own Mahjong Solitaire (also on this site) is our implementation with hints and multiple layouts; Whatajong is an independent open-source project embedded from its official site. Playing both is the point — they feel different.
Can every board be won?
Not every random deal is solvable — that is true of mahjong solitaire generally. Whatajong lets you shuffle the remaining tiles when a board dead-ends, so you can keep playing a hand you like rather than restarting from scratch.
Does it work on touch devices?
Yes. Tile selection is simple taps, making this one of the embeds that plays perfectly well on tablets and phones.