Every table in the lobby opens at different levels.  As you level up and progress through the game, you unlock the next table. The higher you progress, the more challenging the tables get.

The entry bet and max win increase on each table as you work your way to the right of the screen. On every cash table triangle, you’ll see a doubling cube icon with the max number of doubles, as well as a timer icon with the number of seconds you have per move.