A free block building game you play online — no download
BLOX is a 3D block building game that runs right in your browser tab. Pick a build plate, grab a block and start stacking. Nothing to install, nothing to pay.
Play BLOX freeSee community builds →Build anything, block by block
Place, stack, rotate and paint blocks on a 3D build plate. BLOX has 17 block shapes — cubes, bricks, corners, slopes, ramps, triangles, spheres, domes, arches, cylinders, cones and pyramids — so you can go far beyond square boxes: curved towers, pitched roofs, rounded domes and smooth ramps.
Pick your build size
Start small on a 12 × 12 plate for a quick model, or go big on plates up to 96 × 96 for whole villages and castles. Terrain skins like grass, sand, snow, stone and water set the scene before you place your first block.
Daily and weekly build challenges
Not sure what to build? Every day and every week there is a new challenge with a ghost outline to follow. Finish it to earn XP and Bits, level up and unlock new block and terrain skins.
Share what you made
Post your builds to the BLOX community feed, collect likes and comments, or send a share link so friends can open your build straight in the game.
FAQ
Is BLOX free?
Yes. BLOX is free to play. There are no ads and no paywall — skins unlock with Bits you earn by playing.
Do I need to download anything?
No. BLOX runs in your web browser (Chrome, Edge, Firefox, Safari), including on Chromebooks.
Do I need an account?
A free account is used to save your builds, earn Bits and post to the community. Signing up takes a few seconds.
What can I build?
Anything you can imagine with 3D blocks: houses, castles, rockets, pixel art, vehicles, trees and whole landscapes.