Frankly, there's enough ambition on display in Old World Blues that you could almost be forgiven for forgetting that it's a one-off
DLC release. Almost. Sadly, it succumbs to a couple of classic DLC pratfalls. For one, enemy types tend to repeat themselves. Sure, you'll giggle with glee when you spot your first robo-scorpion, but you'll probably be singing a far angrier tune when robo-******* number 267 laser-blasts you in the back. Also, the DLC's first hour or so is a bit too chatty, revelling in its own dialog-centric cleverness when you just want to do something already.
By and large, though, Old World Blues is exactly the type of thing gamers dreamed of when they heard Obsidian was taking the reins on the
Fallout franchise. It's got all the exploration you know and love, but with truckloads of the rib-tickling (and possibly removing) humour that was mostly absent in Fallout 3. Put simply, if you own Fallout: New Vegas, this one's, well, a no-brainer.