Is there another Hunger Games in 'Mockingjay' (even if Katniss and Peeta arn't in it)

No, there isn't. If there was, that would be overkill. I'm guessing anda haven't read the third book, so I won't say a lot more, but it focuses much lebih on District 13. If you've read the saat book you'd know that that's where they are headed at the end of the novel (and movie).