The Ultimate Edition includes the base game and all official expansions:

Dead Money , Honest Hearts , Old World Blues , and Lonesome Road . These are not just extra missions; they tell a connected overarching story that expands the Courier's lore.

“Still, this is well worth playing, though I would recommend downloading the official and unofficial [patches].” Amazon UK

Fallout: New Vegas - Ultimate Edition (PC DVD) : Amazon.co.uk

Courier’s Stash (starting gear) and Gun Runners’ Arsenal (high-tier unique weapons and ammo types). Community Sentiment & Stability