At some point in the game as you advance the storyline, the common enemies become so advanced causing ANY progression to be halted by a pay wall. Spending a few dollars let's you advance a few more steps, then same problem. I have an elite level 33 team trying to defeat level 44 common enemies well advanced in dice, and being defeated 3 out of 4 battles. Plus the goblins that fill your forge because they are some of the "safe" squares on which to land that won't beat you up. Great concept.