# Wobbly Blocks > A single-player 3D physics stacking game for web browsers. Build balanced towers across 46 worlds to reach each goal ring. The first three levels are free to play in your browser. Create a free account for levels 4–10. Season 1 provides access to levels 11 onward, with worlds opening through progression and bonus unlocks. These guides describe the public game content. Account details, purchases, saved progress, and internal review tools are not part of this reference. Each guide identifies its canonical web page. ## Guides - [Wobbly Blocks — Play the Physics Stacking Game](https://wobblyblocks.com/index.md): Stack, balance, and beat the wobble in Wobbly Blocks, a 3D physics stacking game. Play the first 3 levels free in your browser. - [Explore the Worlds & Levels | Wobbly Blocks](https://wobblyblocks.com/worlds.md): Explore every Wobbly Blocks world, from Foothill Steps to the towering Spires. Preview each level, its height goal, and its balancing challenge. - [How to Play Wobbly Blocks | Controls & Stacking Tips](https://wobblyblocks.com/how-to-play.md): Learn how to drop, rotate, and balance blocks, control the camera, and earn three stars in Wobbly Blocks. Start with three free browser levels. - [Block Guide | Shapes & Materials in Wobbly Blocks](https://wobblyblocks.com/blocks.md): Discover Wobbly Blocks shapes and materials, including sticky goo, jelly, magnets, and slippery glass. Learn how to support and balance each block. ## Optional - [Complete reference](https://wobblyblocks.com/llms-full.txt): All public guides in one text file. - [Sitemap](https://wobblyblocks.com/sitemap.xml): Canonical public web pages.