Who actually supplies this market
The studios on this page are not the biggest names in global gambling; they are the ones whose games are physically present in Australian-facing lobbies. That distinction matters. BGaming (33), Booongo (30), Belatra (28) lead the list by how many of the fifty lobbies carry them, while several household names appear in none at all — we removed one from our original twenty for exactly that reason after finding it in zero of the fifty catalogues we captured.
What choosing a studio does and does not get you
Picking a casino because it carries a studio you like is reasonable: catalogues really do differ, and the difference is visible. What it will not do is protect you. A studio does not choose its distributors, does not hold your balance and cannot release a stalled withdrawal. Of the sites carrying the most widely distributed studio here, only a minority publish a licence number you can check.
Each studio page below therefore lists not just where its games are, but what those sites look like — how many publish a checkable licence, how many have a regulator record, how many offer demo play. That is the company you end up in when you follow a studio.
Demo builds
The practical reason to care about studios is consistency. A studio whose demo builds behave identically to its real-money builds lets you learn a game for nothing and carry that knowledge across. Not all of them do. Where a site offers demo play at all, it is noted on that casino’s page and ranked separately under free demos.