I never got around to play it before, but I was a fan of Pandora directive. Now I finally got it as a part of the Tex Murphy Classic collection.
Excluding the firt two titles, Tex Murphy is a series of detective FMV adventure games ("interactive movie") set in a post-apocalyptic future. This adventure game sub-genre was relatively popular in the 90's as digital video technologies were emerging, but never really lived past that time. Under a Killing Moon, is one of the early examples of that genre.
While it was a technological marvel back in the 1993, the game didn't really age well. Stuttery FMV sequences, bad compositing effects and very early 3D environments are sometimes laughable and anything but impressive today. However I consider it part of the charm, as Tex Murphy adventures always were a mix of things that seem like they would never work well together. This retro feel actually helps to convey the atmosphere of a dystopian future, although it probably wasn't intentional at the time of making.
It certainly isn't a game for everyone, and I'm not sure if this is the best game for the newcomers to the series (maybe start with some of the newer titles), but if you like FMV adventures, have a thing for retro, or just enjoy quirky games, you should definitely give it a try. There is a cool story, great puzzles, and couple of good laughs in this Tex Murphy adventure, and you should play it for that.