When choosing online slots to play, considering the RTP (Return to Player) percentage is crucial. RTP indicates the percentage of wagered money a slot machine will pay back to players over time. Opt for slots with higher RTP percentages for better chances of winning. Many online casinos provide information on the RTP of their slot games. Understanding and comparing RTP values can help you maximize your potential winnings in online slots. Make informed decisions by researching and selecting games with favorable RTP rates.