Sharpen your mind with a connect-the-block-style one-line brain training puzzle game.
A simple but addictive one-line puzzle game that’s completely free to play.

The rules are extremely simple.
Just fill in all of the blocks using only one line.

But this one-stroke puzzle is different from the previous one.
Because it becomes 3D, you have to solve puzzles with new thoughts.

You’re sure to get hooked on these puzzles!

Ready to Fill 3D?