The slots with the highest RTP rates at licensed US online casinos are: Blood Suckers (98%), Starmania (97.87%), White Rabbit (97.72%), Medusa Megaways (97.63%), Guns N' Roses (96.98%), Blood Suckers 2 (96.94%), Jimi Hendrix (96.9%), Butterfly Staxx (96.8%), Dead or Alive (96.82%) and Fruit Shop (96.7%).

Pick Slots With The Highest Return To Player (RTP) Percentage. If you're looking for slot machines that are most likely to hit, a good starting point would be finding ones that have the highest percentage of RTP. This is because the higher the RTP percentage, the more likely the slot machine is to pay out.