About Kanpani, I remember reading that they were given 1 year of content and they rushed it in the first month...so my guess is after the next 11 month with nothing,the playerbase was too small to bother bringing new content.

That's the rumor, anyway. How Nutaku managed to fuck up that badly to begin with is the real question, though.

But like I said, FKG's been having constant events since day one, over the course of over nine months. I think it's safe to say it's actually one of Nutaku's healthiest games, nowhere near the likes of Kanpani.