All virtual slot machines follow the same basic mechanics. Within that formula, though, there’s some incredible room for variation. In this article, you’ll get everything you need to know about online slot games and learn about some of the most popular slots which online casinos offer.
50 Free Spins
18+. New players only. 1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds expire in 30 days, unused bonus funds will be removed. Bonus funds are 100% match up to £500 on your 1st deposit, 25% match up to £1000 on your 2nd deposit, and 50% match up to £500 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Terms apply. BeGambleAware.org Read full terms here
18+. New players only. 1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds expire in 30 days, unused bonus funds will be removed. Bonus funds are 100% match up to £500 on your 1st deposit, 25% match up to £1000 on your 2nd deposit, and 50% match up to £500 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Terms apply. BeGambleAware.org Read full terms here
100 Free Spins
Terms and Conditions apply. New players only. 18+. Min deposit 20£. Welcome package split over 3 deposits 35x wagering applies to match up bonus. Offer valid for 1 week. 100 Spins split to 20 Spins a day for 5 days - 50x wagering applies to Spins. Full terms apply. Read full terms here
Terms and Conditions apply. New players only. 18+. Min deposit 20£. Welcome package split over 3 deposits 35x wagering applies to match up bonus. Offer valid for 1 week. 100 Spins split to 20 Spins a day for 5 days - 50x wagering applies to Spins. Full terms apply. Read full terms here
How Video Slots Work in a Casino
While physical slots are incredibly popular, virtual versions have more room for creativity and variety. They blur the line between slot gaming and video gaming. The higher-end games will have high-quality graphics, animations, and sound effects. There will usually be a distinct theme and setting too, whether it’s a medieval Japanese castle or an Amazonian rainforest.
Slots in your web browser have special features too. Certain symbols might become wilds, scatters, or bonuses, each giving you a special boost. You might win free spins or trigger an entire free spin round. Many online casinos will dish out these free spins via promotions, and other offers – like ‘cashback’ deals, deposit bonuses, or a progressive jackpot – are also pretty easy to come by.
How They Differ From Physical Slots
With brick-and-mortar slots, the result is random. You pull the lever, the reels spin, and hopefully, you get lucky. That’s not possible in the same way with a virtual, online casino. Instead, the software developers use an RNG (random number generator) to determine the results.
This might seem a little suspicious. If all the calculations are hidden, how are you supposed to know the game is fair? Thankfully, there are regulatory bodies out there which test and verify that video slots are legitimate. Before using a slot, always check that it has been licensed and regulated by either the UK Gambling Commission or the Malta Gaming Authority.
You should also check the RTP (return to player). This is a percentage figure which estimates how much of your investment you should make back over an extended playing period with that slot. If it’s 97%, for example, and you bet £1 million in total, you should theoretically get a return of £970,000.
Most Popular Video Slots
If you want to dive straight in, though, here are a few of the best video slots for you to get started with.
Jewel Blast

Street Fighter II

Wings of Ra

Final Thoughts
50 Free Spins
18+. New players only. 1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds expire in 30 days, unused bonus funds will be removed. Bonus funds are 100% match up to £500 on your 1st deposit, 25% match up to £1000 on your 2nd deposit, and 50% match up to £500 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Terms apply. BeGambleAware.org Read full terms here
18+. New players only. 1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds expire in 30 days, unused bonus funds will be removed. Bonus funds are 100% match up to £500 on your 1st deposit, 25% match up to £1000 on your 2nd deposit, and 50% match up to £500 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Terms apply. BeGambleAware.org Read full terms here
100 Free Spins
Terms and Conditions apply. New players only. 18+. Min deposit 20£. Welcome package split over 3 deposits 35x wagering applies to match up bonus. Offer valid for 1 week. 100 Spins split to 20 Spins a day for 5 days - 50x wagering applies to Spins. Full terms apply. Read full terms here
Terms and Conditions apply. New players only. 18+. Min deposit 20£. Welcome package split over 3 deposits 35x wagering applies to match up bonus. Offer valid for 1 week. 100 Spins split to 20 Spins a day for 5 days - 50x wagering applies to Spins. Full terms apply. Read full terms here