I hated Bozja when I was leveling it up, mostly trying to do it solo, but I've come around and fallen in love with the content since finding a group of people to do it with. The extremely boring story didn't help (and yet, I'd still like to see a continuation/follow-up on that story's loose threads). I'd hardly describe it as "exploration," though. Eureka was a bit more exploratory, made the map itself more of a character, but that still has its limits when the map is finite and non-random. Eventually you just see it all and that will always be the case.