I was expecting a typical AVN when I started this game but, to my surprise, it's a lot more than that. There are elements from point-and-click adventure games in here, puzzles, exploration, resource gathering and crafting. I would say that half of this game is actual gameplay, while the other half is a visual novel. The story is quite intriguing, too.
It has much better visuals compared to Lust Epidemic, the previous game from the same developer. However, since I couldn't finish the first game due to a bug I had, I couldn't understand some of the references in Treasure of Nadia. Also, even though it's a very popular game, I didn't like it. The game goes into mission loops after a short while and I got bored and tired of it in general, so I gave up. It's not worth going through so much trouble just to see one or two naked animated women. Gameplay in adult games should be simpler. In a game like this, I don't want to be constantly solving riddles or wandering around the map collecting things and doing side quests.