Sandbox Campaign, Week 1: Zombie Bombs and Shadowy Figures

This summer, I've started running a sandbox campaign.  This is my first time doing such, as I tend to have a central plot that drives the story (Choo-chooo! All aboard the Plot Railroad!).  I am excited about the prospect of letting the characters guide the story completely, taking the main plot out of my hands but still  letting me infuse the game with mini-stories and adventure hooks.  I keep telling the players, "You can do anything you want.  Well, you can try to do anything you want."  That is quite freeing for the GM as well, because there is no plot-critical event that must happen, no NPC that must be encountered, no monster that must be slain, no player character that must survive.  Not that I ever really force that stuff in anyways, just that there is a greater air of freedom in this campaign.

I'm running the campaign about twice a week, and I figured I would post short updates here for your reading pleasure.