BR
The basic format is something like this:
Up to 6 teams of 25 compete in a team competition, with the winning team progressing.
One further contestant from the losing teams joins the winning team
The 26 finalists compete to determine who will pick a case and play the main game
The winner picks one of 26 cases, with the others distributed around the other 25 finalists.
The winner wins what is in their case, or can accept an offer from the bank based on the value in cases remaining to be opened. The winner opens 6, then 5, then 4,3, 2 and finally individual cases before discovering what is in their case.
The other 25 finalists can win a spot prize by guessing how much money is in their own case, plus return as a team in the next show.