What makes this game worth $40 more than any other roguelike?

[Tarkh]

Sorry, couldn't take my hands off necroposting...
I never ever understood such kind of people that come and start to ask: "Why should I buy this, why should I like that?"... Buddy, you owe nothing to no one. You are FREE. Absolutely cosmically FREE. And the one and only question of human existence is what do you do with your freedom?
Money is worthless. Love is priceless. There are things (not necessarily games) made with love, and there are things that aren't.
Playing Approacing Infinity I can feel the love that was put into it. And it's not about only love. I feel skill, I feel fantasy, I feel style. I do believe in a world that game creates. It's a quite a rare thing now in gaming, especially for person of my age. When you grow older, you insensibly lose the ability of a child - to believe and to wonder. It's an inevitable process. There are fewer and fewer miracles in modern adult person's life. But I'm ready to pay twice or thrice more than forty crumpled green paper pieces for a little miracle.