Some machines award extra spins, like the new games at Spin Palace. Spin Palace, as the name implies, is an online casino that concentrates on pleasing their slot players.

    They have dozens of different slot machines to choose from, including 4 different bonus screen slots. Of course the casino also has a great bonus program in place, including a welcome bonus for first-time players.

    Of course, some machines offer progressive bonuses. These machines take a small amount of the cost of the spin and put it into a grwoing "bonus" pool. Should you land the bonus symbols on these games (usually you will need to be playing max coins at the time) you win the jackbot 'bonus pool'. Some of these machines pay out over a million dollars on a single spin. And of course you can find games like these (Major Millions, Cash Splash, etc.) at the Spin Palace.

    Another casino with a good line up of bonus slots is City Club Casino. They offer completely different games than those found at Spin Palace, so for a really wide selection of games, consider downloading both casinos. City Club also offers a bonus program for their players, including special bonuses for high rollers and continuing bonuses for regular players.