How to Play Voxel World Builder - Step by Step
Voxel World Builder is a free first-person voxel sandbox that runs in the browser tab: infinite procedurally generated terrain, 35 block types, flying, and a day-night cycle. Press Play, click Play World, and you are placing blocks in under a minute - no install, no account.
Open the page and press Play
Go to Voxel World Builder and press the Play button. The engine is about 0.9 MB, downloads once from this site, and is cached by the browser afterward, so later visits start faster. Any current desktop browser with WebGL works; a device without WebGL shows a plain notice instead. The game is played with a keyboard and mouse - a phone or tablet renders the world but has no touch controls.
Start a world from the title screen
Click Play World to continue the world saved in this browser, or type a seed into the seed field and click Create New World for a fresh layout - the same seed always rebuilds the same terrain, so a seed you like can be revisited or shared. Leave the field empty for a random world. A short terrain-building bar runs and you spawn on dry land.
Move, break, place
Click the scene once to lock the mouse, then move with W A S D and look by moving the mouse. Hold left click to break the block you aim at - each type has its own hardness and a crack animation - and right click to place the selected block against the aimed face. Middle click picks the block you are looking at into the hotbar. SPACE jumps (and swims up in water), SHIFT sneaks without falling off edges, CTRL or double-tap W sprints, and double-tap SPACE toggles flying - SPACE and SHIFT then fly up and down.
Work the hotbar and the block picker
Keys 1-9 or the mouse wheel select a hotbar slot. Press E to open the block picker and click any of the 35 block types to drop it into the selected slot. Blocks are infinite, creative-style. Sand and gravel fall when unsupported, and TNT explodes when broken, so place that one with intent.
Explore what the generator made
The terrain is infinite - walk in any direction and new chunks stream in. Six biomes (plains, forest, desert, snowy tundra, mountains, ocean) come with trees, flowers, and cacti; underground there are cave systems and ore veins from coal down to diamond. A 20-minute day-night cycle runs overhead with sunrise tints, stars, and drifting clouds. F3 shows a debug overlay with your position and biome.
Pause, tune, and save
ESC opens the pause menu with a Controls list and Options: render distance (4-12 chunks), field of view, mouse sensitivity, volume, view bobbing, clouds, music, and smooth lighting. The world autosaves to this browser every few seconds and again on Save & Quit, so closing the tab does not lose the build - but the save lives in this browser's storage only, and clearing site data deletes it. The seed rebuilds terrain on another device; the blocks you placed do not transfer.
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