Even if you’re not a fan of old-school free online slots, you can’t deny the fact they have a special charm. A glance at the Double Bubble slot will reveal it all. The 20-payline slot by Roxor Gaming has a medium volatile math model and an RTP of 96.02%. While it looks vintage on the surface, it incorporates some modern elements that make it all the more exciting to play.

The action takes place on a 5x3 reel set with the retro controls set beneath the reels. One might mistake it for a remake of a real slot machine, but the lever is missing. What the developer also did right was the whole atmosphere, which made it one of the top retro slots we’ve ever tried.

It feels very easy to play on any device and has all the elements to make for quite the retro tale. There’s one significant change from other old-school titles, though. The slot’s winning potential is set at a whopping 20,000x the bet, which rarely happens with classic slot machines. If this sounds like something you’d have a go at the top-rated casinos, read my Double Bubble slot review below.

The Double Bubble slot is not the most innovative in terms of layout and design. You have a 5x3 reel set populated by all kinds of retro fruit symbols. There are lemons, cherries, plums, bells, and single, double, and triple BARs, so you can expect an old-school slot machine from the start. The controls are beneath the reels, so you can also easily set your lines or coin size.

Visually, the slot doesn’t impress, but that’s not its point. The big highlight is the great winning potential and the overall retro vibes. Double Bubble works across all devices, so it’s perfectly mobile-optimized and can be played from mobile browsers with no download required.

To play the Double Bubble slot, all you need to do is choose a bet. You can go as low as 1c and as high as $100 per spin, which is the perfect range for new players and high rollers. Choose a bet that suits you and hit the spin button to start. Wins are formed for 3-5 matching symbols on an active payline. For the best experience, I prefer playing at the maximum number of 20 paylines.

The Double Bubble logo is the highest-paying symbol. It pays 20,000x for 5 on a line which rarely land in that combination. Together with the Super 7, the bell, and triple BAR, they also pay for 2 or more instances instead of the regular 3. The lower-paying symbols can form 3 matches across the lines and a maximum of 5.

A Double Bubble Wild can link wins together. It substitutes for all symbols except for the bonus symbol. From time to time, you’ll see symbols appearing on the bubble line. They pay regular per the paytable, but the multiplier is equal to the number of lines. If you choose to play at 20 lines, the maximum multiplier is x22. This bonus is active in all stages of the game.

Besides the Bubble Lines, the Double Bubble online slot also has a pick’em bonus round. To trigger it, you’ll need 3 scatters. Three bubbles will then float on the screen and you have a shot to pop one. This will reveal a multiplier, which is then applied to your bet and win. The Bubble Line multiplier is always active, and you can track it in the bottom right corner. Whenever a symbol encased in a bubble lands on the reels, it’s collected in the bonus bubble positions.

There’s no bonus buy feature which is a bit of a disadvantage. But, the slot’s medium volatility does its job well, so you can expect varied wins and a bit easier bonus triggering curve.

Old-school real money slots tend to be a hit or a miss. I’m lucky to report that Double Bubble is a hit, thanks to the Bubble Line multipliers and the simple bonus round. I played the slot with a bet of $1, and it didn’t take long to hit a decent multiplier of x5 applied to my wins. It took a while before I triggered the bonus round – probably 30 spins or so. But I was lucky to hit an x10 multiplier, which all but returned the money I had spent up to that point.

Overall, it’s a decent slot with no complex features that has lots of charm. If you like vintage slot machines, you’ll love Double Bubble, too.

The Double Bubble slot RTP is set to 96.02%, which is great for a medium volatile slot. With a maximum projected win of 20,000x the bet, the winning potential is more than solid.

Double Bubble takes players on a retro ride with classic elements that never go out of style. Its old-school approach is bolstered by the Bubble Line multipliers and an interesting pick’em bonus round. Pop those bubbles to reveal the highest multipliers and enjoy cash prizes up to 20,000x the bet.

If you like to try something different, you can go for Fruit Bonanza by Play’n GO. It has better graphics and 4 jackpots to go with it. Fruit vs. Candy by Games Global is also a good choice, with more polished graphics and exciting features.