Heart Box is a browser-based puzzle game that runs instantly, with nothing to install. The core of it is puzzle and physics. It works the same on desktop, tablet and phone, and your progress picks up where the game left it.
About Heart Box
Professor Rat loves physics puzzles and games with robots! Therefore, he created Robby, but gave him a weak battery, which is why the little robot has to constantly recharge and participate in crazy experiments. Features of the game: - Over 180 levels for your brain! - Level Editor and Collection of QR Levels - Online database "Community Levels" - Various skins for the robot! - 4 fun game modes - Realistic physics - Lots of cartoons! - Leaderboard and achievements
How to play Heart Box
The opening minute doubles as the tutorial. 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. If a round goes badly, restart — attempts are cheap and it is usually the fastest way to improve.
Controls
| Input | Action |
|---|---|
| Mouse | Select and drag pieces |
| Left click | Confirm a move |
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
The appeal here is the loop: a short round, a clear result, and an obvious idea about what to do differently next time.
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.
- Puzzle gameplay — Slow down and solve it
- Physics gameplay — Momentum and gravity do half the work
- Added to our catalogue from a 2023 release
Frequently asked questions
Is Heart Box free to play?
Yes. Heart Box 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. Heart Box 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 Heart Box 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 Heart Box?
Keyboard and mouse on desktop, full touch support on mobile. Mouse — select and drag pieces; Left click — confirm a move.
Can I play Heart Box 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 Heart Box?
Heart Box is a puzzle game built around puzzle and physics. If that is the sort of thing you enjoy, the related games further down the page are picked using the same tags.
