The Maxiverse (alternatively Exdakaverse) is pretty much the Miniverse but completely opposite. It's not opposite like the Antiverse is to the Universe, but it's opposite in the way that it's flipped and upside down. This causes gravity to be upside down and everyone in a Maxiverse is automatically Australian. If you get back to Earth when you became Australian, you'll actually end up in Australia or Oceania.
This verse haves 3 temporal dimensions meaning you can go to the time in the second or third dimension. Likewise, it's like the Many-worlds interpretation. It's like you can have two times at ones, like a cat died to poison and the cat didn't died to poison in the same time, that's called the Schrödinger's cat.