Fill one-line puzzle game

"Fill One-Line Puzzle Game" is a free, connect-the-block-style brain training game with 2,000 puzzles across four difficulty levels. The objective is to fill in all blocks using only one line, with hints available for tougher puzzles. This game offers a fun and engaging way to improve mathematical thinking, said to increase work efficiency and slow down aging. Whether you love or hate math, it's sure to draw you in with its simple rules and increasing challenge.