Line Sweeper

Linesweeper is puzzle similar to Minesweeper. Your aim is to create a single continuous non-intersecting loop. The numbered tiles can't be passed through. The number means how many of the 8 surrounding tiles should contain some part of the solution path.
Linesweeper is originally invented by Jak Marshall.
**** Linesweeper features ****
# Content
- 5 difficulty levels
- more than 500 levels
# Features
- "Check" function can highlight wrong lines
- option to enable automatically highlight wrong lines
- Automatically indicate correct numbers
- Autosave the process of unfinished levels
- Record best completion time for each level
# Challenge
- Game Center Achievements
- Try to complete as many levels as possible