Engage your mind with a challenging block connect puzzle game. Fill all blocks using a single line, with over 2000 levels and daily challenges. Also features a water color sorting puzzle with 1500+ levels.





10+ similar games compared and reviewed
Whether you want more options like Line To Fill or a completely different take on the same concept, our curated list of 10+ similar apps and games has you covered. Updated for 2026 with the latest ratings and comparisons.





Engage your mind with a challenging block connect puzzle game. Fill all blocks using a single line, with over 2000 levels and daily challenges. Also features a water color sorting puzzle with 1500+ levels.












Unravel the mysteries of connecting lines to complete intricate grids. This relaxing puzzle game features minimalist design, mystical tunes, and pleasant animations for a tranquil experience. Hints are available to help you navigate the cosmic journey.


A logic puzzle game where you fill a grid by moving a block without crossing your path. It offers a quick and satisfying brain training experience for short bursts of free time.


Connect all the dots with a single, unbroken line without lifting your finger. This game offers simple yet challenging puzzles that test your mind and improve your brain training.


Rotate tiles to connect power, connectors, and bulbs and make them glow. This puzzle game offers thousands of levels with increasing complexity, including color mixing and wrapping mechanics. Enjoy a relaxing yet challenging experience with a visually appealing interface and sound effects.




A casual puzzle game where players drag colored blocks to connect three or more of the same color to score points. The game ends when blocks can no longer be placed. It features a flat design and a new gameplay mechanic.