Build blocky 3D worlds, paint your own blocks and take on build challenges.

A kid-friendly 3D block building game: build worlds, paint your own blocks, take on build challenges.

Works offline, and installs to your home screen from the browser.

Block Designer app icon

Why Block Designer

Works offline

Open it with no signal and it still runs. It updates itself quietly when there is one.

  1. Install it, or don’t

    It runs in a browser and installs to a home screen from the same address.

  2. Your data stays on your device

    Nothing leaves it unless you export it.

Questions

Do I have to install anything?

No. Block Designer runs in your browser at block-designer.harfredlabs.com.

Does it work offline?

Yes. Open it with no signal and it still runs. It updates itself quietly when there is one.

Where is my data kept?

On your device. Block Designer keeps what you enter in the app on the device you entered it on — the privacy policy says exactly what does and does not leave it. Read the privacy policy

How do I get help?

Email harfredlabs@gmail.com, or see the support page. Support

Build blocky 3D worlds, paint your own blocks and take on build challenges.