Line Master Puzzle by KAU, Inc FREE

 Line Master Puzzle comes from KAU, Inc.  The object is to fill the grid from start to finish. We've seen this type of game many times.

I did the 90 Normal levels very quickly. Maybe 15 minutes.

The 90 Hard levels had some interesting elements:
The arrows force movement to the end.
Wormholes. Figuring out which wormhole to enter/exit is key.
A vertical or horizontal: the path must pass over that square and not make a turn.

I solved all the 90 hard levels and then the 90 Pro levels.  The Pro levels did not have any additional features. Drat.  But they were still fun.

Definitely a good game.
https://itunes.apple.com/us/app/line-master-puzzle/id1450932322?mt=8