I am at 32 hours played and still have not played every map. Not to speak of the huge amount of puzzles and challenges I have barely touched. The game has an achievement for 100h playtime, which I will probably get with normal playtime and without getting burned out on the game. You feel smarter after every beaten dungeon and after every little intended "exploit" in the mechanics you find. It gets harder really fast and it takes a while before you understand all of the games concepts and figure out how to play each of the countless classes. I still have not even unlocked all classes, maps and buildings in the game.

You might think $15 is too much for how the game looks, but the content is worth it so much.