Block Builder
A blocky 3D building game in your browser — place and break blocks to create anything you can imagine. Built with Three.js and React.
About Block Builder
Place a block. Break it. Place ten more. Block Builder is a browser-based voxel sandbox where you shape the world one cube at a time — dig into the terrain, stack towers, or sketch out a rough floor plan and see it rise in 3D. There's no objective, no timer, no score. Just you and an open grid.
Built with Three.js and React, it runs entirely in your browser with no install needed. If you've enjoyed other browser games with an open-ended, creative bent, this one earns a spot in that rotation. The controls are straightforward: left-click to remove a block, right-click to place one, and drag to look around — so you can orient yourself in seconds and spend the rest of the time actually building.
It shines most on a desktop or laptop where a mouse gives you the precision to line things up properly; touch controls on mobile are workable but fiddly for anything detailed.
How to use
• Build and destroy blocks in a 3D world similar to Minecraft • Use WASD keys to move around and mouse to look around • Left-click to destroy blocks you're pointing at • Right-click to place new blocks at the targeted location • Press number keys 1-5 to select different block types (dirt, grass, glass, wood, log) • Press C to toggle between first-person and third-person camera view • Jump with the spacebar to reach higher areas • The world generates automatically as you explore - build whatever structures you can imagine • Your goal is to create and modify the landscape using the available block types
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