You have a random chance to get a Bingo Puzzle Card (a card with a puzzle shadow background) when starting a Bingo round, or randomly when opening a treasure chest!
Note:
If there is only 1 collection item left to be collected on the Island (like 3/4), you can only get one puzzle card in the upcoming rounds in that Bingo Room at most, even if you play with 4 cards and boost to the highest level. If there are fewer than 3 puzzle pieces left to be collected in the puzzle (like 13/16), the number of puzzle cards in the following rounds are the same as the pieces left to be collected in that room at most, even when you play with 4 cards.
Note:
If there is only 1 collection item left to be collected on the Island (like 3/4), you can only get one puzzle card in the upcoming rounds in that Bingo Room at most, even if you play with 4 cards and boost to the highest level. If there are fewer than 3 puzzle pieces left to be collected in the puzzle (like 13/16), the number of puzzle cards in the following rounds are the same as the pieces left to be collected in that room at most, even when you play with 4 cards.