In my experience, blackjack and certain video poker variants usually offer some of the highest RTP percentages available in online casinos. Many slots also advertise RTP above 96%, but volatility can vary significantly from game to game. When I was comparing different options, I spent some time reading guides on loose slot machines about online casinos and game mechanics. Those articles explained RTP in a way that was easy to understand. I still choose games based on entertainment value as well, but knowing the return percentages helps me make more informed decisions when selecting what to play.