According to industry data, some of the highest paying online slots have RTPs (return to player percentages) of 98-99%. For example, popular titles like Blood Suckers (98% RTP) and Mega Joker (99% RTP) are known for higher than average payouts. Jackpot 6000, with its 98.8% RTP, has handed out over €30 million in winnings. Focus on slots with RTPs of 96% and above for better odds.