Just visited a site called www.l4dmaps.com, theres a mod called "i hate mountains 2", which is the next chapter after crash course, is it possible to get it in a versus, ive played it and it has a maze in an old castle, it continues the story line, there are also other mod that picks up from death toll, they also have the parish at nite, its called the dark parish played by moon lite. a must site for modding l4d, l4d2, some site servers have "helms deep" just a thought