Where is the Left 4 Dead game series set?
The Left 4 Dead game series — 2 video games, 2008 to 2010 — is set in 3 real places, and Wikipedia names 2 more. A game is filmed nowhere, so these are where the stories happen, from Wikidata's narrative location statements.
The games
Named in Wikipedia's own articles
Places the members' Wikipedia articles name with no matching Wikidata statement — weaker evidence, listed apart here exactly as it is on every page of this site.
