Usually in these types of stories things are grimdark from the first chapter and have outlandish origins. This manga builds up a reason to care about characters for the first few chapters that isn't shallow. The app for this game doesn't come from supernatural voodoo or aliens or whatever. The story is logical for the most part (except for the parts with the cops, no idea whats going on there.) And while its not done being translated yet I get the feeling its headed for a good ending since the first arc ended on a good note. Overall if you're into the Game of Death genre read this one!