Bonus online slot machines are certainly the most popular of all the modern online slot types. Bonus slots typically have symbols with special features such as scatters and wild symbols. Once a certain combination of scatters or wild symbols appears on the reels, a player enters a bonus round.
Bonus rounds in bonus online slot machines add up to the general excitement. First of all, they spice up the monotonous process of spinning the reels. Second, they allow players to boost their budgets with generous bonus payouts and cash prizes. There are two basic types of bonus rounds incorporated in bonus online slot machines: games on the second screen and free spins games.
Free spins bonus rounds become an integral part of every modern video slot. The scheme is really easy and straightforward. A certain number of scatter or wild symbols trigger a bonus round with a certain number of free spins awarded.Sometimes you get a fixed number of free games- 10,12,15,20 and so on. For example, Diamond Dozen online slot machine by Realtime Gaming features a great free spins bonus round with 12 free games triggered by 3 or more scatters. In some other bonus online slot machines, a number of free spins depends on a number of symbols that triggered the round. Gypsy Queen slot machine offered in Microgaming casinos can be a wonderful example of such a scheme. 2 adjacent Crystal Ball symbols trigger 12 free spins, 3 scatters trigger 15 free games, 4 scatters- 20 games and and 5 scatters trigger 30 free games.
Free spins rounds usually have two extra features that can boost a player’s bank. First of all, all payouts received during the free spins game are usually increased by a certain multiplier. In most games you find in UK online casinos your prizes will be doubled or tripled. The second extra feature is that a free spins round is usually retriggerable. In case a special triggering combo appears on the reels, a round will be retriggered.
Now let’s proceed to the second common type of bonus rounds in bonus online slot machines. Once a triggering combination appears on the screen, the scene shifts to another environment that usually corresponds to the general theme of a slot machine. Most bonus rounds on the second screen are based on the pick-a-right-item principle. If you select winning items, you leave the round with extra wins. If not, then you return to the main game. Some modern bonus online slot machines feature skill-based bonus games, such as iSlots by Rival Gaming. For example,a bonus round in Hole in Won video slot allows you to prove your golf skills. Some Microgaming bonus online slot machines offer a player to double his/her bonus payouts in a risky Gambling feature.