It certainly looked like a carbon-copy, but the magic of New Vegas was that it tapped into an aspect of the original games that Fallout 3 didn't: expertly juggling jet-black humour with wonderfully silly ideas.
Away from the restraints of a massive world to fill, Old World Blues is a vacuum-packed chunk of Obsidian's imagination - inviting you to take a trip to an abandoned crater filled with scientific oddities.
Tasked with saving the Big MT research crater from an evil scientist and his giant robo-scorpions, Old World Blues sees you interacting with an entirely robotic cast throughout the 7 hour stint, but the lack of fleshy faces never stops the dialogue and scripting from being genuinely brilliant. If you grew up in the 1990's you'll probably be as thrilled as we were to realise that one of the main characters in the game is voiced by the more devious half of Pinky and the Brain.
Character is key throughout Old World Blues - also acting as the driving force behind what would otherwise be a dull scavenging side quest. Find lost datadiscs throughout the big MT and you'll be gradually rewarded with an array of talking household appliances - a pleasant nod to Futurama that certainly doesn't disappoint.
The aging engine and repetitive environments prevent it from ever really feeling fresh, but the level of creativity behind Obsidian's latest DLC pack is hugely impressive nontheless - a reminder that whilst they sometimes have a habit of fudging the basics, they really are at the top of their field when it comes to making RPGs.
It's tough to go into too much detail without spoiling all the fun, so I'll keep it simple: Old World Blues features a psychotic toaster who wants to set fire to the world, a robot that can't tell the difference between fingers and penises, and a weapon called the K9000 Cyberdog Gun. If it was available to buy in shops, I'd like to think they'd enough sense to just print that on the box and be done with it.
After following Fallout 3 up with the New Vegas, Obsidian proved to be an excellent B-team for the franchise. Capturing the spirit of Fallout in a way that nothing we've seen before has managed, Old World Blues demands a new world order: they know how to drive this one Bethesda. It's time to give them the keys.
The best bit of Fallout DLC so far