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This bingo machine uses 75 balls.
The 90 balls version is available as a separate app below:
https://play.google.com/store/apps/details?id=jp.aosystem.bingomachineninety
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A version where the machine and cards are linked online is available separately here. (75 balls)
https://play.google.com/store/apps/details?id=jp.aosystem.bingoonline
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Bingo machine simulator.
Randomly remove balls with numbers from 1 to 75 on them.
The history of the numbers taken out is also displayed.

This app also has a card function, so multiple people can enjoy bingo games with just this app. One person acts as a facilitator and handles the bingo lottery machine. The other person handles the bingo cards as a participant.

There is a function to read out the balls that are taken out. Bingo parties, events, and everyone can enjoy it for free.

You can't enjoy a bingo game alone.
Install the app on multiple people's devices.
The facilitator uses the bingo draw feature.
Participants use the bingo card feature.
There is no cooperation function between devices.
It is intended for use by multiple people at the same place, such as at a party.