Eurogamer says it sucks and gives it the "utter shite" award - 5/10.
http://www.eurogamer.net/articles/fallo ... iew?page=2
"Perhaps the most disappointing factor about Mothership Zeta is how little subtlety is afforded to the details, and the absence of choice in how you go about completing the game's three missions.
More than in possibly any other portion of Fallout, the gameplay is extremely linear. Although certain tasks can be completed in a different order, this apparent freedom is rendered redundant once it dawns on you that the tasks are identical on each occasion. Reduced to a series of trivial button-pressing quests, getting to your objective involves nothing more than trudging from one inconsequential area to the next, wading through the drudge of utterly perfunctory corridor shoot-outs with the same three new enemy types.
The same applies to how you feel about the new enemies.
You'll want to believe that Bethesda will do something interesting with this race of alien invaders (because that's exactly what Bethesda is known for these days - making interesting shit. - VD), but it does nothing more than stick to the most obvious archetypes possible. They cannot communicate with humans, so react with ill-advised and unsophisticated aggression. Disappointingly, almost all of these little fiends are felled by a single shot, and any hope of tense firefights with intelligent foes soon fades.
It doesn't help, either, that the new loot in the game isn't particularly inspiring. The Alien Disintegrator energy weapon certain packs a punch, but as a result it renders the Alien Atomizer and Alien Pulverizer rather redundant with its vast clip size and superior damage. As with a lot of loot in the DLC packs to date, you're generally so ridiculously powerful by this point that few weapons can better what you have.
Where Mothership Zeta really falls down is the complete lack of inspiration in the mission design. ....
With repetitive, largely uninspired corridor combat, and boring, linear and samey mission design, the least you'd hope is that there would be some supplementary side quests to extend the lifespan - but not so."
