Great formation/tactics autobattler. I ended up buying the intro pack only because i wanted to support it. Progress is fairly constant - it eventually slows down but by that point you have enough to really focus on tactics. Expect to run it overnight in sleep mode! I normally dislike idle games, but this is solid. You have smal/medium/large troops to assign in a 3x3 grid, heroes, and [free] gold to upgrade as you see fit. Been playing for a few weeks, around level 350.