MathTest21 drops you into a puzzle challenge you can start in a couple of seconds. Think math — that is the shape of it. It works the same on desktop, tablet and phone, and your progress picks up where the game left it.
About MathTest21
A new simple math app. Guess the result. Check your calculation skills with this simple app
How to play MathTest21
There is very little to learn before your first run. Load the game above and it fills the player in portrait. On a phone you can play one-handed; on desktop the frame stays centred so nothing is cropped. Restarting is instant, so there is no cost to experimenting.
Controls
| Input | Action |
|---|---|
| Mouse | Navigate menus and interact |
| Arrow keys / WASD | Move |
| Spacebar | Primary action |
On mobile: Tap and swipe directly on the screen. The game is built for portrait, so you can play one-handed without rotating your phone.
Why it is worth playing
MathTest21 does one thing and does it properly. There is no bloat around the edges, which is exactly what you want from a browser game.
At a glance
- Free to play with no account required
- Runs in the browser — nothing to download or install
- Portrait layout, comfortable one-handed on mobile
- Keyboard and mouse on desktop, full touch support on mobile.
- Math gameplay — Mental arithmetic that does not feel like homework
- Added to our catalogue from a 2022 release
Frequently asked questions
Is MathTest21 free to play?
Yes. MathTest21 is completely free and runs in your browser. There is no purchase, no subscription and no account needed — open the page and play.
Do I need to download or install anything?
No. MathTest21 is an HTML5 game that runs inside the page itself. There is nothing to install, no plugin and no launcher — it loads like any other web page.
Can I play MathTest21 on my phone?
Yes. Tap and swipe directly on the screen. The game is built for portrait, so you can play one-handed without rotating your phone.
What are the controls for MathTest21?
Keyboard and mouse on desktop, full touch support on mobile. Mouse — navigate menus and interact; Arrow keys / WASD — move; Spacebar — primary action.
Can I play MathTest21 fullscreen?
Yes. Use the fullscreen button in the top-right of the game player to expand it to the whole screen, and press Escape to come back out.
What kind of game is MathTest21?
MathTest21 is a puzzle game built around math. If that is the sort of thing you enjoy, the related games further down the page are picked using the same tags.
