For Australia, I would start with legal availability rather than the game catalogue or promotional features.
Magius Casino was one of the names I encountered while comparing different online gaming platforms, but there is an important point to consider: the ACMA identifies Magius in its list of prohibited services and states that it breached the Interactive Gambling Act by providing a prohibited online gambling service with an Australian customer link. Because of that, I would not present it as a suitable Australian option. I would establish the legal status first and only compare platforms that are permitted to operate in Australia.