Zpocalypse from Greenbrier Games and it took me longer to get my head around the rules than I thought it should.
I made up a series of flowcharts to help me out. I took the approach of "make the rules flowchart I wished I had when I was trying to learn the game."
You can download my Zpocalypse Flowcharts v1.2 here.
A nicer version is hosted by and available for download direct from Greenbrier Games! Many thanks to Jeff Gracia (who is responsible for Zpocalypse) for this!
v1.0 - Initial rough draft
v1.1 - First (very brief) release
v1.2 - Rule correction re: placement of fortifications, and clarification with search tokens wording. (Oct 2013)
1.2 based version used as a supplement and hosted by Greenbrier Games. (Nov 2013)