Weighing up "Is bingo gambling?" takes one look at the draw. Keno, bingo and scratch cards are the number games that sit closest to a lottery. Each one draws or reveals numbers at random, pays by a fixed table and asks nothing of the player beyond a choice of numbers or a ticket. What they pay, whether they can be rigged and how they work online explains why they are popular and why they cost more than they seem.
Bingo is gambling wherever cards are bought for money and prizes are paid in money, even when it is played as a social game. A bingo game does pay, but prizes come from the pool of card sales minus the operator's share, so the more players join a session the larger the prizes and the longer the odds. Online bingo games cannot be rigged where the draw is certified, although unlicensed rooms offer no check of that kind.
Keno can be played online as well as in venues, with a draw of twenty numbers from eighty repeated every few minutes or instantly on demand. Licensed keno cannot be rigged by the operator, because the draw comes from a certified generator or a ball machine on camera. Whether keno is worth playing depends on accepting its price: its house edge is among the highest in any casino, often twenty percent or more, so it suits small stakes and a patient player.
Online scratch cards work differently from printed ones: each card is generated at the moment it is bought, from a random number generator with a published return. Anyone can play scratch cards online where the site is licensed, and winnings go straight to the account. Printed winning cards can usually be cashed at any retailer that sells that lottery's tickets up to a set amount, but not anywhere else, and larger prizes are claimed from the lottery directly.
Bingo prizes are paid from card sales minus the operator's share, so more players in a session mean bigger prizes and longer odds for each card.
Keno draws twenty numbers out of eighty, repeated every few minutes in venues or instantly on demand online.
Smaller prizes are usually paid at any retailer selling that lottery's tickets up to a set amount, while larger wins are claimed from the lottery itself.
Licensed draws come from a certified generator or a filmed ball machine, so the operator cannot rig them; unlicensed rooms offer no such check.
Keno keeps among the highest edges in any casino, often twenty percent or more, which makes it better suited to small stakes and patience.