I have this as a 6/10, but that is out of major respect to the studio and their ambition with this movie. For an Australian film, this is shockingly ambitious and isn't afraid to do big action scenes. Now, some of the CGI is iffy, but it's perfectly fine, given this isn't a major studio release (I'm looking at you Ant-Man and the Wasp: Quantumainia).
The kids acting is surprisingly solid; it's always hard to find good child actors, and to find some outside the U. S. is outstanding. That's where many of these family adventure movies fall, and it's great that they found good talent. Also, they will probably be great for kids to see themselves in the characters, so that's a plus.
The main faults of the movie are the generic story and (as I mentioned before) its iffy CGI. The story is serviceable, but it's been done many times before; it's okay to go down the same path, but without enough turns, it ultimately just feels samey and that's a problem both big and small movies can have. The CGI, at some points, shocked me with how good it was, and I want to give my full praise to Hive Studios Australia; but at other points, I felt like I was ready to pick up the XBOX 360 controller.
The reason why I'm saying this is because they are on a good path and just need to keep pushing a little further to create great CGI through and through.
I want to keep this review short, but this movie is an absolute trip that, although it doesn't always land on its feet, makes up for in adventurous spirit. If you're a parent looking for a movie for a family movie night I'd highly recommend this one.