To function properly on an online casino, progressive free slot machines must have several advantages:

🟣 Network connection: You may not realize it, but these machines are interconnected, either within the same casino or across different casinos, nationally or even internationally. Every time a player bets money on one of these machines, a percentage of that bet is taken and added to the progressive jackpot. This feature isn't always true; some machines have their own progressive jackpot.

🟣 Jackpot growth: The winnings continue to grow as bets are placed. The more players a machine attracts, the bigger the jackpot becomes. Once the jackpot is won, it resets to a predefined starting amount. This means there's always a real prize to be won on a progressive slot machine.

What are the different types of progressive free slot machines? There are 3 types, although it's not clearly indicated on the slot:

🟪 Standalone progressives: This name applies to slot machines that are not connected to other machines. The jackpot is specific to the individual machine. There is no competition, so you don't have to worry about other players; you have your own chances of winning. More and more video slot machines from the Novomatic studio are integrating this additional element into their gameplay.

🟪 Local progressives: Several slot machines in the same casino are linked together. The jackpot is fueled by players from that specific casino. This isn't the most common setup for studios producing iGaming games.

🟪 Wide-area progressives: These slot machines are connected to a network of casinos. The jackpots can reach astronomical sums, but the competition is fierce. This is the case with an incredible slot, Mega Moolah by Microgaming, one of the biggest progressive slot machines. A lucky player won a bonus of €19 million on this machine by simply spinning the reels.

Here's a selection of 5 free progressive slot machines to try on Jackpot Bob, voted best online casino of the year.

Jackpot Raiders

Ready for the Jackpot Raiders adventure! Here's an exceptional machine in every way, by Yggdrasil. With stunning graphics, an exciting plot, and the chance to win 5 jackpots, you're in for a treat.

To win the Forgotten, Rare, Mythical, Ancient, or Legendary jackpot, you need to collect 5 gemstones of the corresponding color to the jackpot. None of these jackpots have a maximum value; the more players on this slot, the higher the amounts.

Rainbow Jackpot

Thanks to the theme of this Red Tiger slot, you can win a Grand Jackpot and a Daily Jackpot to be won at fixed times and dates. The little man with the green hat is none other than the Leprechaun, the ultimate lucky charm in Celtic tradition.

This mischievous sprite loves to hide cauldrons filled with gold coins under a rainbow. To play with this jackpot slot machine, visit the page above this review. Try the slot for free online!

Elysian Jackpots

Another creation by Yggdrasil for Elysean Jackpots! To access the 5 jackpots, you need to collect 5 identical gems. The jackpot gemstones only appear during the free spins session. And to trigger the free spins, you need to first get at least 3 Scatter symbols.

Of course, you can't win them in demo mode. In this case, you need to be a registered player on our casino and play with real money. The universe of this slot is inspired by Greek mythology; Elysium is the place in the Underworld where virtuous heroes find rest.

Jackpot Express

Jackpot Express is a Yggdrasil slot with 5 reels and 20 paylines. But those aren't its only features. The machine also has 3 progressive jackpots, one of which is currently around €18,000, that's the Major jackpot.

The other two are Minor and Secondary with smaller amounts. With this slot, the adventure is at the end of the river as you're transported aboard a steamboat sailing on the Mississippi. Bon voyage!

Jelly Belly Megaways

Developed by NetEnt, Jelly Belly Megaways is a fun and lucrative creation thanks to its Megaways system and its 117,649 paylines. The 6 reels are populated by anthropomorphic candy-shaped characters, each funnier than the last.

For this machine, you can win one of the jackpot tiers offered when 3 or more jackpot symbols appear on the reels. Another option, the jackpot is triggered by a game feature itself.

To play on progressive free slot machines, you need to browse the list of machines above this review. Winning real money on our casino requires you to be a registered player:

• Follow the instructions in the form
• Make an initial deposit in euros or cryptocurrency
• Accept our welcome bonus
• Return to this page
• Select slot machines
• Favorite them by clicking on the heart
• Click on the thumbnail
• The slot loads to fit your screen size
• Place your first bet
• Click Spin

We have a surprise for newcomers: a welcome bonus equivalent to 200% of your first deposit and all of this, with no wagering requirements. It's free, a gift to thank you for choosing us.

Your choice depends on three parameters: the provider and their approach to developing attractive machines, the amount of the jackpot, or even the gameplay options. To see more clearly, read on.

Choosing your provider

Max Win Gaming, R7, Yggdrasil, Play’n GO, NetEnt, Betsoft, Pragmatic Play, Red Tiger are some of the studios that have chosen to highlight the principle of the progressive jackpot on their machines. To choose the provider, it's best to preselect it by typing its name in the search bar and choose from the list provided by Jackpot Bob.

It's also an interesting way to discover the creations of these gaming providers, the variety of themes, and functionalities. These machines, whether they are 5-reel or Megaways, have been designed for the players' pleasure. The creators have particularly paid attention to the graphics, 3D animations, and soundtracks.

Choosing the Jackpot amount

When you enter a slot, the amount of the progressive jackpot is immediately displayed. Some machines offer small jackpots, while others represent several million euros.

Is it enough to say that a machine with a low jackpot isn't worth it? No. It depends on your ambition and your budget. It's clear that a million-dollar machine is more inaccessible, and you'll probably have to allocate a larger portion of your bankroll to it.

Choosing your options

Choosing your options requires some knowledge of the world of these free online games. The bonus features are all different, and if you feel like you're encountering a similar configuration from one slot to another, it's not the case. Why? Because the studios create a context, a theme with symbols unique to each machine.

However, the common thread may concern the number of paylines like Megaways machines, the ability to align Wild or Scatter symbols, the presence or absence of multipliers, free spins, or bonus games like the Gamble Feature where you have to guess the color of a card. Progressive free slot machines are no exception to these patterns.

Jackpot Bob's casino team shares some tips for you to enjoy playing on a progressive jackpot slot machine with peace of mind:

🟣 Understand the gameplay: Before playing, take a few warm-up spins on these free games in demo mode to grasp how progressive jackpots work. We've taken care to specify the rules and functions for many machines; you'll find an explanatory guide below the slots.

🟣 Play the maximum bet: To be eligible for the progressive jackpot, the heart of the machine, you must bet the maximum allowed amount. Progressive jackpots are tempting, but they require a lot of patience in addition to an appropriate budget.

🟣 Choose multi-level machines: Some slot machines offer different jackpots: Mini, Minor, Major, or Grand. They represent an additional chance, although the amounts are smaller on these free online games.

🟣 Monitor the jackpots: Some players choose to play on machines where the jackpot hasn't been won for a long time, thinking that the probability of a big win is higher. It's not proven, but it's tempting.

By following these tips, you enhance your gaming experience on progressive jackpot slot machines while effectively managing your budget and enjoyment.

Playing on a progressive machine is very interesting. Here are the reasons:

• ✔️ Potential for high winnings which is much more attractive than standard winnings
• ✔️ Extra excitement and suspense
• ✔️ Controlled entry cost at €0.10 or €0.20 per spin
• ✔️ Multiple jackpot levels to increase your chances of winning (Minor, Major, Grand)
• ✔️ Contribution to the jackpot, the more players, the bigger the jackpot
• ✔️ Wide range of choices in theme and gameplay
• ✔️ Equipped with modern features, Hold & Win bonuses, Sticky Wilds, etc...

What an adventure! Imagine the journey since the first machines were invented in the late 19th century by a mechanic from San Francisco. The Liberty Bell, the name given to this slot, offered a jackpot thanks to a combination of symbols and liberty bells. Undoubtedly, a tribute to the country that welcomed it.

The slot machines of that time did not offer progressive winnings. The concept of progressive jackpot was introduced later, radically transforming the appeal of slot machines. In the 1980s, these slots were enhanced with RNG, video screens, to allow for more complex games.

There is no shortage of anecdotes about these technological gems:

• In 2003, a 25-year-old engineer won nearly $40 million on the Megabucks machine from IGT in Las Vegas. He had bet $100.
• In 2000, Megabucks made another billionaire by winning a jackpot of $35 million. The story doesn't reveal how much she bet!
• In 2015, a young man hit $2.5 million on a slot machine. He was showing a friend how to play, inserted a coin to demonstrate, and the jackpot hit.

How to hit the jackpot on a progressive slot machine?

By playing! That's the only way to win a progressive jackpot. Keep in mind that the most lucrative machines require a more substantial budget allocation.

How to choose the right progressive slot machine?

It depends on your preferences. You can select the provider, the type of progressive jackpot, or even the machine's options in terms of features.

Are Jackpot slot machines free?

The free aspect does not depend on the type of machine. Yes, most progressive slots are free slot machines where you can test the gameplay.