Beat State of Decay. It makes sense now that they give you so much padding between offering you storyline missions, there really is only a small handful of them.

I think I found out that going around and clearing out hoards and infestations makes the next mission popup. Perhaps having too many hoards and infestations stops the main storyline, or perhaps it is coincidental and going out and killing hoards and clearing infestations did nothing more than cause me to stop watching the proverbial pot while waiting for it to boil.

Final verdict: Very much worth every single one of those 2,000 pennies I spent on it. I was kind of disappointed that none of the achievements were any kind of a challenge to get. It seems with Xbox arcade games you either get every achievement just for beating the game, or they give you achievements that are impossible or really time consuming.

SPOILERS

I feel like the game threw all these plot threads at me, then didn't resolve them. What are the Judge and the Sheriff up to? Restoring law and order to the town. Okay, let's see where that goes... Oh, nowhere. Second courthouse mission the place gets over run and they both die off screen, end of storyline. How about the Wilkersons and their ruthless ways? Ah, I see, that ends with us realizing that they are ruthless, but can be friendly to those who help them. For some reasons I was expecting some twist where it wasn't really them that were terrorizing the other survivors. Maybe I missed a piece of their story somehow? I feel like it stopped giving me Wilkerson missions with the plot just dangling there, but I got the achievement for completing their story.

It felt like a lot of detail and mystery was put into each of the story lines at the start, enough to get you intrigued and to want to look into them, then they all just fizzle out and go nowhere after two to four short missions