As Rainbow Riches fans you may have heard of the term

Return to Player (RTP) .This figure represents a percentage that the game is calibrated to pay out, over it's lifetime, to you the player .

All Rainbow Riches games are required, by law, to clearly display the associated RTP, or the equivalent odds of winning a prize.

In theory the higher the number, the greater the return . So if a machine states that the expected return is 97% it is theoretically better to play than a machine returning say 90% .

Most land based version of Rainbow Riches have a RTP of approximately 90% wheres its online equivalent has an average RTP of 95%

However, it is very important to understand that this percentage is a figure that  the machine returns over a large number of plays and is not a percentage that is returned every single time you play.

Just don't be fooled into thinking that becuase a machine has a RTP of 92% you will get 92p every time you gamble £1.00.

Also, whilst there is no statutory minimum percentage payout for any gaming machine, the technical standards for gaming machines do specify a lower limit RTP of 70% .

Here are some examples of RTP's currently offered by the top online casinos

If you wish to find out more about RTP's and the technical standards for Rainbow riches and indeed all UK gaming machines visit the UK gambling Commission.