Concrete Jungle

It's late. A few remaining shoppers head for the multi-story car park after
attacking the sales at an adjacent shopping center.

However, they become trapped in the underground bunker when, incredibly,
trees start to sprout from beneath the car park, transforming the concrete
structure into a ruined, maze-like cavern.

Unable to find a way out it becomes a struggle for survival, for not only
does the car park continue to transform back into a jungle, wild animals
have begun to appear, governed by hunger under the foliage canopy.
Now the humans must fight to survive - not only Mother Nature, but a foe
just as deadly...each other.

This edition contains bonus stories from Nate Kenyon and Tim Kroenert.