This is a world somebody sent you. Build in it all you like — yours is safe until you press Keep this one.
How it works
- Tap to put a block down on the face you tapped.
- Drag to look around. Two fingers: pinch to zoom, move to slide.
- Mouse: click builds, right-click breaks, right-drag slides, the wheel zooms.
- Keys: 1–9 pick a block, the arrows turn, + and − zoom, Z undoes.
- The sun and the moon at the top are day and night. At night the lamps light up what is around them.
A new world
Your world saves itself on this device. Start a new one and Undo brings the old one back.
Open a world someone sent you
Paste the whole message, the link, or just the code after w=. It opens as theirs — yours stays where it is.
Change it
Every block is one line in blocks.js. Add a line at the end with a name, a colour and a pattern, reload, and it is in the bar. It can even glow.
The numbers at the top of builder.js are yours too. NIGHT is how bright the moon is. FALLOFF is how far lamplight reaches. SIZE is how big the world is.