I tried it because I'll try most things that Square Enix releases. They always have my attention since they're the company that makes Final Fantasy... and if you haven't noticed by now, I love Final Fantasy.
Heavenstrike is a turn based lane pushing strategy game. You summon units using mana and the units push up each lane trying to get to the enemy commander to do damage. The first one to take out the opposing commander wins.
The basics aren't bad, but the game has all the free to play trappings that I try to avoid. Energy is used each time you enter a battle and if you run out of energy you can either wait a while or pay real money to buy more. You can also pay real money to have a chance to recruit new super units. This is not the way I want games to make their money.
It's the worst of free to play and pay to win combined. Ugh.
I hope Square Enix starts releasing mobile games without free to play mechanics soon. I would love for them to make a solid game and just sell it for one price... you know, like the good old days.