Here's something recently introduced that slot machine players either love or hate.
The concept of a "guaranteed" amount of play for a given amount of "coin in", as is said in the bricks and mortar casinos, was started here in Las Vegas with a limited number of slot machines, and the jury is still out.
Now, availability of "guaranteed play time" has been extended to Internet casino online slot machine fans.
Here's a recent report on guaranteed play slot machines from a Las Vegas viewpoint, and another geared towards the online casino player.
Source: www.southafricanonlinecasinos.com