Looking to play Wasteland.

I am really interested in playing wasteland. I have played alot of Arma 2 and DayZ but have taken a break from DayZ (until the standalone is out anyways). I have a few questions:

• What separates wasteland from DayZ? Is it simply DayZ w/o Zombies?
• Where can i download it at? The page on the sidebar is in a different language.
• What are some of the differences of the versions mentioned on the side?
• And which is the most played version?

Thanks!