Many of TopCasinos recommended online casinos are powered by software from Realtime Gaming (RTG). These include Club World, Slots Jungle, Win Palace, Silver Oak and many others. These are among the few online casinos that service players from the United States. RTG ensures that its online slot games are innovative so as to find a niche in the competitive market. Feature Guarantee is one concept that is unique to RTG.

Usually the free spins bonus in online slots is triggered by a random event like a particular alignment of symbols on the reels. Feature Guarantee offers two additional ways to trigger the free spins bonus, one of which guarantees the trigger if the player is sufficiently patient. The free spins bonus is automatically programmed to trigger after a set number of spins. The Feature Guarantee counter is displayed on the top right hand corner of the game screen. After every spin counter decreases by 1 count. The existing count is saved even if the player exits from the game. When he next loads the game the Feature Guarantee does not start from the initial value but from the last value. When the counter reaches 0 the free spins bonus is automatically activated. The counter is then reset to the initial value and the same process repeats. The free spins bonus can be triggered even if the counter is not at 0 if the specified alignment of symbols is obtained on the reels. The counter will be reset to the initial value after the free spins. The counter gets reset to the initial value if players change the betting parameters. However, it will return to the latest value when the earlier betting parameters are restored.

The second way of triggering the free spins bonus using Feature Guarantee is activating the Instant Trigger Chance. The Instant Trigger Chance meter is displayed below the Feature Guarantee counter. It indicates the probability of success if the trigger is activated at that point. As the Feature Guarantee counter decreases, the Instant Trigger Chance meter increases. Next to the meter is the Play button. The Instant Trigger Chance can be activated by clicking on the Play button. This displays a screen with a circle having red and green bands around the circumference. The proportion of green bands corresponds to the probability of instantly triggering the free spins bonus. On activating the Instant Trigger Chance, the green bands randomly get scattered around the circumference. An indicator rotates around the circumference for a while and then stops. If it stops on a green band the free spins bonus will be triggered. But if it stops on a red band the player is returned to the main game. In either case the Feature Guarantee counter is reset to the initial value. Therefore players should be very careful in using this facility.

RTG introduced this feature in a variant of the Aztec’s Treasure online slot game. It is not available in all RTG online slots, but only in a selected few. Some popular slot games with this feature are It’s A Mystery and Mice Dice. Recently RTG launched a new online slot game titled Dream Run. It has the Instant Trigger Chance without Feature Guarantee.