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Playing jackpot slots online is entertaining and can provide players with an opportunity to win life-changing prizes. Here we discuss what progressive slots are and the different types as well as listing some of the best games and where they can be played for free.

What is a Progressive Slot Machine?

Progressive slots are a popular type of casino game of which there are two basic types. The first type has what is known as a progressive jackpot. What this means is that the jackpot grows every time that the game is played. A small portion of each bet placed goes into the jackpot so that it continually grows until somebody wins it at which time the pot resets to an initial amount. As the pot size is always changing the chances are that no two players will win a jackpot of exactly the same size. The second type of progressive slot works in a slightly different way. The jackpots are of a fixed amount. They are called progressive slots because the player has to work their way through a series of stages in a game, with each stage rewarding the player with a progressively larger jackpot. Any two players who win the jackpot will receive the same amount as it is fixed at each stage. Both types of progressive slots can be very rewarding. The largest overall payouts are from some of the slots with progressive jackpots but progressives with fixed pots will generally hit more often.

Progressive Jackpot Slots

Progressive jackpot slots have the most impressive payouts of any online casino game. Some jackpots can reach millions of dollars in size but others don’t get anywhere near that large. There are 2 different types of progressive jackpot slots:

Local Progressive Slots:These are slots where any bet made by a player on that particular game in the same casino goes into the jackpot. Jackpot sizes can be in the tens of thousands of dollars so are pretty impressive. They are known as local progressives because only bets made by players in the same casino contribute to the jackpot.

Network Progressive Jackpot Slots:This type of progressive jackpot slot includes the games that really grab player’s attention. They are the ones that produce multi-million dollar jackpots. The slot game is networked through multiple online casinos so jackpots grow much faster as well as much larger. The largest ever network progressive jackpot won was over €18 million or 26 million Canadian dollars on the Mega Moolah slot from Microgaming.

One thing to keep in mind when playing progressive jackpot slots is that you usually have to play the maximum amount of coins in order to qualify for the biggest jackpot which isn’t always feasible if you have a limited budget.

Top Jackpot Slot Games

For your convenience we have made a short list of some of the most popular progressive slots you will find in a jackpot casino.

Holmes and the Stolen Stones:This Sherlock Holmes themed slot developed by Yggdrasil has 5 reels and 20 paylines. Players can work through different stages by collecting 5 crystal shards of the same colour to form complete diamonds. There are 5 different jackpots in the game with the maximum payout being $24,000. This is a low to medium variance slot so there are frequent payouts. “Holmes and the Stolen Stones” has a 96.8% Return to Player (RTP).

Mega Moolah:Mega Moolah from developer Microgaming has the distinction of paying out the largest progressive jackpot slot ever as previously mentioned. It is an African themed slot with 5 reels and 25 paylines. Players have a chance at 4 different jackpots, those being the Mini, Minor, Major and the Mega. Mega Moolah is a low to medium variance slot with an RTP of 94%.

Reels of Wealth:Reels of Wealth from Betsoft is a 5-reel slot with 10 paylines. Some of the special features of the game include wilds, scatters, multipliers and free spins. It has a total of 4 different jackpots players can win. This is a high variance slot with a 95.29% RTP.

Divine Fortune:Divine Fortune is an ancient Greek themed slot developed by NetEnt. The game has 5 reels and 20 paylines as well as a number of special features including falling wild re-spins, free spins and a jackpot bonus feature. Players must fill 1 row with bonus symbols to win the minor jackpot, 2 rows to get the major jackpot and 3 rows must be filled with bonus symbols to catch the mega jackpot. Divine Fortune is a medium variance slot with a 96% RTP.

Diamond Wild:Diamond Wild was developed by iSoftbet and is a 5-reel slot with 20 paylines. Players have the option to play 1, 5, 10, 15 or all 20 of the paylines. Diamond Wild has five different jackpots that can be won by getting 5 or more diamonds with the largest jackpot coming from getting 9 or 10 diamond symbols. This is a high variance slot with a 95.2% RTP.

Free Jackpot Slots Game

You can try out any of the above jackpot slots without risking a cent at King Billy online casino. They offer dozens of casino jackpot slots including the above, all of which can be played for free. To try out a slot just choose the game you want and select the “Play for Fun” mode. The game will instantly load in your device's browser and you can start playing right away at no cost to you. It isn’t even necessary to register to the site in order to play. Once you become comfortable with the slot you can play for real money or try another slot if you don’t like the first one you tested.

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