The RTP or Return to Player provides you with the house edge on a particular slot. Although no deposit free spins are completely free and do not require you to make a deposit, any gamer would still want the chance to win! An RTP of more than 96% will give you a superb chance of winning.
Some of the top slots with an RTP of 96% include:
Starburst - 96.1%
ALOHA! - 96.42%
Book of Dead - 96.21%
Glory and Britannia - 96.06%