Valve are still fixing up Left 4 Dead 2, over 10 years after

Valve seem to be continuing to give some love to their older titles, with Left 4 Dead 2 recently getting a nice bug-fix release.

Preorder Left 4 Dead 2, Get Bill's Hat In TF2 - Game Informer

Left 4 Dead 2 - Valve Developer Community

Left 4 Dead 2: The Passing - IGN

Left 4 Dead 2 Was Made Because The Original Was Very 'Broken

Left 4 Dead 3 is a non-priority, according to Counter-Strike 2 files

Brand New in box. The product ships with all relevant accessories

Left 4 Dead 2

Valve 'accidentally' leaks the earliest Left4Dead prototype, and it was a Counter-Strike mod all along

Left 4 Dead - Wikipedia

The Time Left 4 Dead 2 was BOYCOTTED (And Why it Happened)

Valve Left 4 Dead 2 (Xbox 360) - Pre-Owned

Developer Commentary (Left 4 Dead 2), Left 4 Dead Wiki

Valve: We're 'Absolutely Not' Making Left 4 Dead 3

Steam Community :: Guide :: Top 50 Left 4 Dead 2 Custom Campaigns

As Left 4 Dead 2 turns 10, we speak to its creators about the Valve game that won't die

Flashlights Off! - A Left 4 Dead 2 Game Review, by HCI Games Group, Human-Computer Interaction and Games Research