Paul plays a VERY chilled out Art Gallery SIM which is free to play on STEAM called "Occupy White Walls" If you're looking for a very chilled out, zombie free SIM builder, this is it.
Yep. I'm hooked on UNDAWN now (its free on steam) which is a very chill sim about a post apocalyptic future. Most of the time its very relaxing...but sometimes ZOMBIES show up. LOL I'll post it here. I'm trying a lot of the free games on Steam recently.