In version 0.c-7585-gefc0cca,
it seems like there is possibly a bug with the new code where hordes all migrate to 0,0. I can’t say for sure that this is a bug, since I don’t know where 0,0 is, and whether the hordes actually attempt to go there in the code.
The blinking pattern that I saw hinted at this. In the attached images, with hordes shown, you can see that there are many hordes which seem to have the target 0,0.
http://imgur.com/c1VnoYz <-- shows horde moving from town to the south and town to the east toward north west
http://imgur.com/5dDiTHg <-- their pilgrimage destination?
I only came across this issue because apparently I happened to choose a base that’s in their path, and was getting a seemingly endless parade of zombies.
I hope that I’m prepared when I finally run into that consolidated pack.
Apparently not.