The truth is that there is no trick to slot machines. They provide random results based on set mechanics and it all comes down to luck. With that being said, not all games are the same, so picking the right options is key, and you can still change the size of the bet throughout the session for better results.
Blackjack - Up to 99.87% RTP\n\n This is the highest paying online casino game of them all. Some virtual blackjack variants have a house edge of just 0.13%, meaning there is a 99.87% RTP rate.