izigame.me

Note: This review is only for the Vault-Tec workshop addon and not the whole game(which is good) and I bought it in the Fallout 4 GOTY edition, which is what I recommend on sale as well unless you just want the base game
Vault-Tec workshop gives you one more place where you can build a settlement which is a whole new Vault (88)!
Here's what it provides you:

New settlement location - Vault 88. Located under Quincy Quarries
New vault themed building and furniture options
Some power(power conduit, wall light) and defence options(guard post, security desk) and also the population management terminal

Now, that still seems like it's not too bad for a small dlc so why am I giving it a thumbs down?
Cause it's lackluster and broken.
I'll cover here as to WHY it is bad:
The vault design
On the first glance, the vault seems gigantic and it looks like you can build in an enormous area! Which is good but there are so many tunnel structures and areas which do not fit with the original vault aesthetic at all.... It's really not even possible to make use of most of the area (on vanilla) you will most likely just have wide empty expansive areas in your vault which you wont really bother with after visit the place for the first time. The area design is simply not good and wasn't even designed to work properly(more on that below). It's just some lazy and crappy design.
Building limit.
In my previous point, I mentioned how you won't even be able to use most of the buildable area, this is one of the reasons. The building limit will severely limit you and you wont even be able to expand to one of the external sectors if you build extensively in one place (Not to mention performance problems, but they are just native to the game itself). I know there are glitches you can use as a workaround or mods to completely circumvent the issue but I still feel it's way too crappy of Bethesda to release the DLC knowing the building limit is an issue, again just a crappy design.
Pathfinding issues.
Second reason on why you wont ever build outside the main chamber of the vault. The settlers won't EVER go outside the main chamber. This means that anything you construct outside the main chamber, which is in another sectors or tunnels will never be populated or traversed because the pathfinding is simply broken or never designed to work in those areas. The settler pathfinding was pretty buggy in the main game as well but this is just broken on another level. It's good to know this issue beforehand rather than building for quite some time and realising that it's futile.
The lighting.
The lighting in the ENTIRE vault is completely messed up. Everything is way too dark and it needs an overwhelming amount of lights in any room to make it properly visible or lit up. This will take up an enormous amount of resources and your sanity while building which is again an issue they should have thought of before releasing the dlc.

Other than all the above-mentioned I have some minor personal complaints. First being that the location of the vault is very crappy (inside a cave under Quincy Quarries). Unlike the other farmland and the island on the south-east, this is just too isolated from the rest of the places and there's quite some radiation outside in the flooded quarries as well which I personally don't like making a settlement near. Secondly, I feel the content added (settlement buildings) is pretty meh in general and it should better be a part of base game. I like the settlement feature in fallout 4 but the game forcing you to buy the dlc just to make some vault themed furniture on other settlements feels a bit wrong to me. Additionally, I don't like the fact that this vault basically has no backstory. The overseer mentions how they had some plans for the vault but it still doesn't line up with how the other vaults get their own unique backstories. Vault 88 seems to be a common experiment ground for a bunch of different social experiments while all the other vaults (in The Commonwealth) were specifically designed for one experiment in particular and went all in on that. Lastly, I didn't cover the questline in my review till now because it's rather small and I don't think it's even worth calling it a questline. Instead, trust me when i say this but when you meet the overseer, just do everyone a favor and plant a bullet in her head. It's for the best, I promise!
Closing remarks: Get the dlc if you want to use the vault themed furniture in the other settlements or want some mod to work. Additionally, I would prefer to buy the GOTY version on sale instead which is pretty cheap on sale (10 bucks) while this dlc standalone (5 bucks) is way way more expensive compared to the amount of (working/useful) content it offers. Conclusion: Never trust Vault-Tec, not even when they publish their own dlc.
3/10
Doesn't fully work as intended. Sucks.