Here's more about each of those 10 best high RTP slots along with information about where you can play them.

Mega Joker  99% RTP. ...
Codex of Fortune  98% RTP. ...
Starmania  97.87% RTP. ...
White Rabbit Megaways  97.72% RTP. ...
Medusa Megaways  97.63% RTP. ...
Secrets of Atlantis  97.07% RTP. ...
Steam Tower  97.04% RTP.