Bingo King adds progression to bingo: you buy cards with in-game coins, play rounds against a pattern requirement, and unlock new levels and rooms as your coin balance grows.
The bingo itself is unchanged — random numbers, marked cards, first to the pattern wins — but the level structure gives you a reason to keep playing beyond the individual round.
By winning rounds. Buying more cards per round improves your chances but costs more, so the balance between the two is the only decision in the game.
No — coins are in-game only, with no deposits or payouts.
Yes — tap to buy and mark. Nothing to install.