Blood Tracks is a fully supported 3 map campaign for Left 4 Dead 2. It includes coop, versus, survival, and scavenge. Version 2.0 is now released. Changes include level balancing, a new event, improved lighting, more custom assets, bug fixes, and more.
A variety for screen shots from the 3 levels of the campaign: The Woods, The Tracks, The Rescue.
This section may eventually see WIP shots of the planned 4th map.