The true method of knowledge is experiment. So, strapped to the underside of a stolen Combine helicopter, you're part of my latest scientific investigation. Objective: To infiltrate and observe this peculiar little island a few miles off shore, its heart burrowed out by our ever-loving benefactors...
A very well made mod outside a few things:
The texts can be hard to read, not having enough time to read in peace was oftenly a problem.
At times there's just too many enemies and not a single one at others when you'd expect at least someone guarding the room.
The first layer of the base wasn't always using assets fitting the background (this isn't City 17 obviously).
The endless zombie wave can be problematic if you don't find what to do, having zombies spawning all the time didn't help.
I think that this mod is overrated, I have heard that was one of the first mods available, and sure by those standards it is amazing, but people have called this the best mod ever, and by today's standards it doesn't hold up. Their isn't really much variation in the gameplay from half life 2, which is a shame because the actual combat was pretty bad in HL2, mostly because the weapons were terrible pea-shooters that had little impact. The fact that there are no new weapons harms the game pretty badly as the game is mostly combat, now my memory is pretty fuzzy but I remember the story being a kind of infiltration mission, but the thing is the character of Minerva, the computer SHODAN clone thing doesn't really get much back story and seems hopelessly confusing. I give it a four out of ten, because of some truly impressive set-pieces, but I don't want set-pieces in my Half Life, I play half life 2 because you have so much freedom compared to most games these days. Half life 2 also had pacing and pauses in the action, in this mod theirs neither, you just dropped by a helicopter and shoot some dudes. Now to some this may seem like a hate speech, but I am only doing this because I want to have a community that can recognize when something is revolutionary, but after time has passed can see past the nostalgia and see that this is nothing more than a map pack, sure it's a pretty good map pack, but I play half life for the story and atmosphere, not the gameplay, and I think most can and will agree.
One of the best mods available for HL2. The new Steam Director's Cut Version is simple amazing in story, gameplay and visuals. Some of the architectural ideas in various locations are stunning, especially the big reveal done by the Power Core later in the game. Wow! That was awesome. If you are going to start playing mods for HL2, I'd recommend beginning with this one. You won't be disappointed.