This expansion had so much talking, honestly I think I loaded into the expansion and spent the next 30 minutes talking to the floating brain guys. I think that ended up making the dlc more interesting though as once you make it to Mobius, everything that you heard suddenly starts making much more sense and it all clicks together. The environment was probably my favourite in the game as I really enjoyed exploring the area, and partaking in all of the small experiments that had been set up. Finding all the Sink personalities was quite fun as well. I think this expansion was probably the least serious of them all, but I enjoyed that it was a bit more tongue in cheek and wasn't overly serious, but then again fallout never is. Probably my favourite dlc.