@PokerAndBettingThere used to be free Bingo in all rooms, like one game every half hour or so. But I guess they thought it was a little too generous or something. Back then the free games in Arena and Podium used to have a €10 prize pool, while the All Stars and Grand Prix ones only had €5. But when they reduced the number of free games and removed them from Arena and Podium, they increased the All Stars and Grand Prix prize pools to €10, so at least that weighs up for it a bit. But that said, I also miss the free games in the other rooms.
And I should probably add that I'm also very grateful that they still offer free games as often as they do. There aren't a lot of Bingo rooms that do that.