I worked with three teammates to produce a brand new campaign for Left 4 Dead 2. We called it “Liberty Revoked”. It is a prologue to Valve’s zombie survival shooter released in 2009;.
This allowed us to set the campaign in the northern states which provided many more interesting panoramas to create levels for.
In my 15 minute mission players make their way from an urban house basement, towards a militarized government building in hope of finding safe haven.