1- ONE RULE : Fill everything with one line.
2- BRAIN GAME : Hundreds of logic puzzles.
3- BRAIN TRAINING : Improve your logic and mind.
4- RELAXING : Relaxing music and colors.
5- GAME MODES : Four different videogame modes.
6- HOURS OF FUN : Difficulty from easy to hard.
7- CONTROLS : Slide your finger to draw the line.
8- COLORS : Various color themes available.