Decreased number of zombies spawned from units from 3 to 1
Increased Zombie strength to 50
Increased Fast Zombie strength to 30

This was done to decrease the number of zombies a player has to control as a zombie, making gameplay more manageable.

-Fixed bug with zombies spawning multiple times.

-Removed numerous game breaking bugs
-Optimised the adding of zombies
-Updated the system that decides when zombies will spawn. It becomes exponetially more likely that zombies will spawn each year. I worked out some benchline probabilities; 50% chance for zombies to spawn after 1930, 25% chance for zombies to spawn before 1861, 10% chance for zombies to spawn before 1770, 5% chance for zombies to spawn before 1700, 1% chance for zombies to spawn before 1540. As you can see, in most games the zombies will spawn between 1700 and 2020, however they can technically spawn at any date prior.

Out of experimental phase, have a working prototype.