I could yap for hours about how much this game means to me, so I hope this review doesn't end up being a biblic paragraph.
Your first moments in the game would be: "bro, this is old af" it is, it's a game from 1999, also, the game isn't as well known as Age of Empires or Starcraft. If these games are having dinner together on a table, Dungeon Keeper is like the little piece of paper you put under one of the legs to keep the table from moving.
Moving on, the first levels in this game are basically the tutorial, don't worry, while progressing through them you will get used to the mechanics, unlike the controls and bindings, which you can re-bind with no problem.
The game has interesting features, for example, EVERY creature has a mood system, this can be disturbed by torturing, slapping, overworking and depriving them of their basic needs as well as improve their moods by gambling, feeding them and many other ways to keeping them happy. There's an economic system, you can farm gold and with it you can build your unlocked rooms, pay your creatures (yes, you have to pay them, yes, they get angry and sad when they don't get their salary), pay a large amount of money with your casino and train your creatures. Basically it feels like having a big Sims family but you don't get more benefits from being the "best" keeper, be bad and mean, it's more entertaining >:) .
One of the things I dislike about DK2 is that the creature's AI tends to glitch, especially during battles, making them to even die in decisive moments of your playthrough but the end result feels so polished that it's hard to believe it's still running so well today, especially since it's EA who brought it back as publisher.
Do I recommend to get the GOG version instead of the steam one? Probably! honestly I pirated this game a lot of times and played it with no problem, I bought it a few years ago in GOG but I only played like 6 levels and that's it. I'm about to finish this steam version soon and it feels great to play, I had a few crashes but I've been having that problem with every version I've played for years, so ig it's something due to how old the game is(? not sure tbh.
I'd love to keep writing about this game but I don't want to make this any longer, so, yea, buy it if you want, there's a "fix" guide you could use but I had no need to use it because, as I said earlier, it's hard to believe this is the steam version, especially for an old game.
You won't regret for playing as the bad guy here, and I really hope you enjoy it as much as I have for so many years.
No, I haven't played the first game (yet) :D