What is the Hex Quest game, how does it work?

According to the introduction of Gamer Gav, Hex Quest is a Role Playing game on the Android platform. There is currently a 1.0 version released on Dec 21, 2016, you can see the details below.

Hex Quest is a turn-based puzzle adventure game, where you attempt to save a forest from an evil cult of magic users.
Challenging Gameplay
You'll have to keep your wits about you to progress further into the forest. With over 15 playable levels Hex Quest will challenge even the most adept strategist.
Three Playable Characters
With three playable characters, all with unique abilities and upgrades, Hex Quest has something for all playstyles.
Replayability
With randomly generated levels and shuffling upgrade options no two games will be the same!