Honestly is a pretty faithful recreation of the first hour or two of Fallout 1, and just as challenging too. Some of it's balancing and QoL features actually make it even better than the real thing in some ways (it automatically selects how many caps i need when trading thank fuck).
Artstyle and lewd content is pretty alright, some polish went into this to elevate it beyond the typical RPGmaker type games that are essentially just art galleries will extra bullshit, although sexual content is possibly too spread out and I would prefer it more implemented as solutions to quests and such rather than the sorta side-content or defeat senarios it largely is now. A bit too much of this is just like a standard early game playthrough of F1, killing radscorpions, etc. On one had that's a compliment to it's gameplay, but on the other we're here to play a hentai parody, if I want actual F1 I could launch it.
Story could use more clear direction, as if you weren't familiar with F1 I would expect you would be completely lost in some parts. Even as a seasoned F1 player, it's custom content will often stump you, like trying to find wherever the fuck the laundry is in the vault. Desperately needs a quest log.
And I try to just review games as they are when I play them and not speak too much towards development time, but I did check the patreon to this to see when it started development and I can confidently say that there is not 7 years of content in this.