Stack World

Stack World is a physics puzzle game where you place blocks and keep them from falling off the screen until the countdown reaches zero. It includes over 100 levels, and you can create your own with the level editor.

Stack the blocks

Each level has its own layout and set of blocks, which vary in type, size and rotation. Work out how to place them all without letting any fall off the screen before time runs out.

Create and share levels

The level editor includes a tutorial. Your levels are saved as JSON files on your hard disk, which you can share with friends or other players.

Timed packs

Levels are grouped into packs of 10. Clear every level in a pack without retrying to set a pack time, then compete for the fastest times on the leaderboards. You can filter the leaderboards to show friends' times only.