A suggestion i have is to add an optional mode that changes a few things in the start.
First of all, You don’t start off in an Evac shelter. You start off in a house, on a normal day. Then on the news your program stops with an emergancy message. “ATTENTION ALL CITIZENS. WE HAVE DETECTED A BIOLOGICAL ATTACK. ALL CITIZENS MUST TRAVEL STRAIGHT TO THE NEAREST EVACUATION SHELTER IMETIATLY.” basicly you have 15 minutes to go to the evac shelter, or try your luck staying in the house, which has randomized items like any other house. It might sound OP, but wait for this next part. When the game starts, like, tons of different zombies start coming out of everywhere, bombs start dropping, robots going haywire, and giant worms. Unless you get really unlucky, staying in the basement of the Evac shelter should have roughly a 95% chance of survival. Uptop should have about 68%, outside roughtly 10%, and in your house 35%. Also what happens, is out of things like manholes and science labs or military outposts, and out of the sky, clouds of zombie disease comes out and basicly you have an almost garunteed chance of catching the virus. Depending on the intense-ness of the cloud, the shorter you have untill you turn into a zombie and basicly “game-over”. So you have to go to say, then end of a science lab, get the resipie for the cure, make it, and cure yourself before you turn. Every day you spend w/ out taking the cure you get worse effects. The first day nothing happens, but the next few days you slowly get effects like turning into a zombie. Also, what i would like to see is more ruins. It makes me question the god-like building abilities of the townsfolk. Buildings should be on fire, burnt, have rubble, and only a FEW homes and buisnesses in perfect shape. I think it would make the game more interesting, and have more of a slight rush. And remember, it’s an option, not a required thing. (also things life fungal blooms and deadly swamps to apper untill after the inital cataclysm. Maybe things life the fungal blooms start off with like, fungal ground appering in an area untill if is finished. Just an idea!