Online Game Huebrix
Huebrix is a puzzle game with colored blocks and numbers. Each block has a number on it. That number tells you how long the block must become. You drag the block to make it the right size.
You must fit all blocks on the grid. Blocks cannot sit on top of each other. If you stretch one block too far, it can block another one. That is why you think before you drag.
The game feels relaxing. You can try, undo, and try again. When every block fits, the whole board fills up neatly. It feels good because you solve it with your brain and careful moves.