Any novels like BLAME, Dorohedoro and/or GANTZ?

I really likes the surreal aspects of all of these manga series, and I think they all capture a unique sense of horror, wether it be cosmic or otherwise. I have a lot of mixed feelings about GANTZ and I actually dropped the manga halfway through when the only admirable character (IMHO) died, but I think GANTZ is still incredible when it comes to that kind of unknowable horror I’m looking for.