Among so many X-COM remakes, reimaginings, spiritual successors and what not, this is the only one, that really captures how the first two X-COM games were and what made them so revered. Xenonauts is very faithful to the original games and it doesn't compromise to appeal to new audience. Although it's not one-to-one clone, there are improvements, balance changes and some additions, making Xenonauts better than the original games, I dare to say.
I'm curious on your experience with Xenonauts. Especially, I would love to know, what people who never played the original X-COM games think of Xenonauts.