These files increase the zombie population exponentially after the first events. The special zombies have been kept to a minimum. The time between sieges was increased four times.

Installation:

Extract to the main SOD folder.

Recommended mods:

Adeno's George Romero mod for the slow zombies folder (else it will be a World War Z effect), the fatal wounds and other difficulty folders hes got in his lifelines version.
http://www.moddb.com/games/state-of-decay/downloads/george-romero-mod-t18-lifeline

No Zombie Radar Blips, by myself:
http://www.nexusmods.com/stateofdecay/mods/152/?

The characters in the picture can be found here. I've also added a lot of other options.
http://www.nexusmods.com/stateofdecay/mods/154/?