Fallout New Vegas started life as Fallout 3 DLC

Bethesda was too busy with Skyrim to work on Fallout New Vegas, so turned it into a full game and gave it to Obsidian

Fallout New Vegas®: Lonesome Road™ on Steam

For $20 you could get Fallout New Vegas and all it's DLC, Or you could get a Paint job for your power armor in fallout 76. : r/gaming

Fallout 3 Broken Steel DLC restored for PC

Fallout: Tale of Two Wastelands 3.3 for 2023

Beloved RPG Fallout: New Vegas Was First Meant to Be Fallout 3 DLC

Fallout: New Vegas Is About Letting Go

Fallout New Vegas - All DLC Story Trailers (Fallout NV All DLC Trailers)

An Evaluation of Fallout New Vegas' DLC

Fallout 4 Mod Adds a DLC Worth of New Content, Including a New Ending

Fallout: New Vegas Was Originally an Expansion for Fallout 3

Which Fallout New Vegas DLC is the easiest, and the hardest? - Quora