What is the trail game, how does it work?

According to the introduction of Frisky Gorilla, trail is a Puzzle game on the Android platform. There is currently a 1.0.1 version released on Oct 06, 2014, you can see the details below.

A clean, minimalist puzzle game that challenges you to draw over a randomly-generated shape with one path (no going over the same line again!). Particular emphasis has been put on simplicity for a smooth feel (no CPU-hogging ads, simple but effective graphics) so nothing gets in the way of your puzzle solving. Two modes, Timed and Flawless, will challenge you to be quick and to be careful, while they increase in difficulty as you progress. See if you can get to the top of the leaderboards!

Permissions:
- Photos/Media/Files: This is just so a save file can be written to and retrieved from your phone storage, there's no accessing any existing files and especially not your photos (I'm not interested in where you went on holiday, honest), this is just the name Google gives the permission as it theoretically allows it.

Featured On Various Lists on Playboard (great place for finding good quality apps): http://goo.gl/px0Gsu

What's new in version 1.0.1 BUGFIX GALORE!
- Fixed back button's function
- Stopped Google Play Services bugging people, it only tries to auto sign in once
- Improved tutorial slightly
- Scaled Game Over screen properly
- Made timed mode a bit easier (more time)