[Ekaros]

There has been some real loopholes and probably still are. Outside outright bugs the promotional offers with free credit and certain low variance high return slots allowed in certain scenarios for people to make theoretical profit. Though most likely ended up gambling any net wins anyway so...

[Nextgrid]

Yes but that was not it. The game that was demonstrated in this ad was something called “Lucky Jet” or “Aviator” where you bet some money and then there’s a multiplier than goes up starting from 0 - at some point the multiplier will crash and you lose your bet, so your objective is to cash out before that. For the game to be profitable you’d need the multiplier to sometimes crash before 1, but in his video that never happened and he was consistently able to cash out in profit. If these were the real odds the casino would be bankrupt very quickly. Maybe the casino is crooked in a different way and just finds excuses to never let you withdraw your winnings, so they can really give you good odds knowing you’ll never actually be able to withdraw your winnings.