Here you can see all our Bonus slots, basically any slot game that features a type of bonus feature. Our slots offer a wide range of different bonus game rounds, from the simple pick an item type games to much more sophisticated and entertaining games in their own right. Some of our slots even have skill-based bonus rounds where the player may have to use speed or accuracy to win more credits.

Our bonus slots are both Flash and HTML5 powered, so can be played on both desktop and mobile devices. They're totally free to play and you can play instantly in your web browser with no deposit and no download required.

Mobile & Desktop Slots

Merlin's Cave Slot

Merlins Cave Slots

Bonus Games: 2
Our brand new Merlin's Cave Slots Game has a magic and mystery theme with two spelllcasting bonus games. play on desktop and mobile during May for the chance to win $50!

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Super Fruits Game

Free Super Fruits Slot Game

Bonus Games:3
Launched in March 2016, our new 20 payline slot game features exciting bonus games, a progressive jackpot and a loyalty feature.

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Casino Cruise Game

Free Casino Cruise  Slot Game

Bonus Games: 3
Our new and exclusive Casino Cruise slot game features three brilliant bonus games, a progressive jackpot and a loyalty feature.

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Free Fireworks Slots Game

Free Fireworks  slots game

Bonus Games: 1
A cool Build Your own Fireworks Display Bonus Game: buy and win fireworks to put on a display to please your fans.

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New Year Party Slot

New Year Party Slots

Bonus Games: 1
Our New Year Party Slots Game let's you put on a fireworks display in London, New York, Sydney or Paris in a fantastic firework themed bonus round.

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Mr Green Slot

Mr Green slots game

Bonus Games: 2
Our new and exclusive Mr Green slot game features wild symbol, scatter, two bonus games and a loyalty feature.

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Chinese New Year Slots

Free Chinese New Year Slots

Bonus Games: 1
Our Chinese themed slots game has a bonus gamble feature with a 50/50 bet that allows you to double the winnings (or lose it all) for every 8th winning spin.

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Free Bingo Slots Game

Play Bingo Slots Game

Bonus Games: 1
Get 3 Bingo Bonus symbols on the reels to activate the Speed Bingo Bonus Game. This is a 30 ball version of bingo where you have to get 9 numbers daubed off your card before all 30 numbers are called.

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Cleopatra Slots

Play Cleopatra Slots Game

Bonus Games: 1
Cleopatra themed Slots Game the eye symbols is the bonus symbol. Get 3 or more Eye symbols to play the Pick a Block bonus game. Start at the bottom row of the pyramid & try to reach the top.

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Christmas Slots

Free Christmas Slots

Bonus Games: 1
Christmas themed slot. The sparkling Christmas gift symbol is the bonus symbol get 3 or more on the reels at any one time to activate the pick a gift bonus game.

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Free Easter Slots Game

Free Easter Slots

Bonus Games: 1
Easter themed slot. Play our 5 reel Easter slot - get 3 or more Basket of Easter Eggs symbols to play the Pick Easter Eggs Bonus Game.

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Monopoly Slots

Free Monopoly Slot

Bonus Games: 1
Make your fortune on the markets in our Monopoly Slots Game. The bonus game is activated by getting 3 or more Light Bulb symbols anywhere on the reels and is a Pick an Item type game.

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Free Fast Slots Game

Play Fast Slots Game

Bonus Games: 1
Cars, bikes and planes feature in this fast slot game. The vintage car scatter symbol triggers the bonus round in which you pick cars and win the cash stored in their trunks.

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Free Pirates Slots Game

Play Pirates Slots Game

Bonus Games: 1
The Treasure Map symbol is a scatter symbol and 3 or more visible on the reels at any one time activate the Hidden Treasure Bonus Game - choose up to 6 spots to hunt for the treasure.

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Summer Holidays Slot

Free Summer Holiday Slot

Bonus Games: 1
This slot has a gamble bonus game activated on every winning spin. You will have a choice to collect or gamble you win. If you gamble you must predict either the colour or the suit of the next card.

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Football Fever Slots Game

Free  Football Fever Slots Game

Launched to celebrate the World Cup 2014, new Football Fever slot game features Wilds, Scatters, Free Spins, and Bonus Game.

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Video Slots

Free Video Slots

Bonus Games: 1
Our Video Slots game was our first to have a video intro! This slot game has 20 paylines, a wild symbol and a bonus game.

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Vegas Slots

Free Vegas Slots

Bonus Games: 2
Vegas themed slot with a gamble bonus game and a brilliant loyalty bonus feature; collect four chips to play the loyalty bonus round. There are 3 levels with extra point for each level completed.

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Girl's Best Friend Slot

Free Girls Best Friend Slot

Bonus Games: 1
Hit the high street & treat yourself to the finest jewels in this glamorous, 5 reel, 20 payline slot game with free spins and loyalty feature.

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Free Slots UK Game

Bonus Games: 1
Our UK themed slots game has a bonus gamble game triggered after every 3 wins. Guess the card colour or suite to win.

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Aussie Pokies Slots

Free Aussie Pokies Slot game

Bonus Games: 1
Australian themed slots game. The Gamble Bonus Feature is triggered after every 3 wins. The Gamble Bonus Feature is a pick a card colour or suit gamble game.

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Free Canada Slots Game

Play Canada Slots Game

Bonus Games: 1
Fun Canadian themed game. Get 3 or more of the Jumping Fish scatter symbol to trigger the pick a fish bonus game. Each fish hides credits, the number of scatter symbols dictates how many picks you get.

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USA Slots

Free USA Slots

Bonus Games: 1
Our patriotic USA themed slot has a Gamble Bonus Game that is triggered after every 3 wins and is a pick a playing card colour or suit gamble Feature.

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Snow Ball Slots Game

Play Snowball Fight Slots Game

Bonus Games: 1
The evil faced Snow Ball symbol is a bonus scatter symbol. Two or more on the reels activate the multi level skill based bonus game where you get to have a snowball fight with the evil snowmen!

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Video Poker Slots

Free Video Poker Slot

Bonus Games: 2
If you like playing video poker then our Video Poker slot will be right up your street thanks to its 2 video poker bonus rounds; play Deuces Wild Multi-hand Video Poker and Jacks or Better Video Poker for extra points.

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Lucky 8s

Free Lucky 8 slots game

Bonus Games: 1
Eight is a lucky number and we launched this site on 8/08/08 so we thought a Lucky 8's game would be nice to mark the occasion.

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Sporty Slot

Free Sporty slots

Bonus Games: 1
The Beijing Olympics started the same day we launched this site so we thought why not make a sporty slot.

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The Big 5 Gamble

Free Gamble Slot

Bonus Games: 1
Our first big gamble game 5 payline's and a gamble game, hear the lion roar when you win!

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Free Classic Gamble Slots

Free Gamble Slots

Bonus Games: 1
The second in our 'Classics' range of free slots games, with a gamble bonus game that allows you the chance to double your credits after every win!

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Desktop Only Slots

ComeOn! Slots Game

Free ComeOn! Casino slots game

Bonus Games: 3
Football, Hi Lo and Poker are the bonus features of this brilliant slots machine game which has also has a loyalty feature, progressive jackpot & 243 betways.

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Sloto'Cash Slots Game

Free Sloto'Cash Slots Game

Bonus Games: 6
In this slot you get to build the ultimate casino in an awesome 6 scene bonus game feature in which you must build the ultimate casino complete with blackjack and slot machines!

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Treasure of Atlantis Slot

Treasure of Atlantis slots game

Bonus Games: 5
Our exclusive Treasure of Atlantis game has 5 reels, 20 paylines and features 5 bonus round plus free spins and a hidden bonus code.

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Slots of Vegas Slots Game

Free Slots of Vegas slots

Bonus Games: 2
Our Slots of Vegas slot has two awesome bonus games. Test your reflexes in two skill based bonus games: Photograph Nessie on the reels and play the Bonus board of horror. U.S players can win $50 this month!

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Jackpot City Slots Game

Free Jackpot City Slots Game

Bonus Games: 2
Try to light up the city in the City of lights bonus game and if you get 2 or more key symbols anywhere on the reels it will trigger the pick an item style bonus round.

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Slotsjam Slots

Free Slotsjam Slot

Bonus Games: 3
This slot has a Gamble Bonus game, a skill based Mr Slotsjam Cherry Fall Bonus Game in which you must catch the falling cherries in your tub to earn extra credits and a Pick Mr Slotsjam Bonus Game.

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Treasure Mile Slots Game

Free Treasure Mile Slots

Bonus Games: 3
This slot has a brilliant Shooting Bonus Game to test your reflexes, a racing game and an exciting hidden loyalty bonus game.

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Fruit Slots Game

Free Fruit Slots

Bonus Games: 1
Fantastic fruity slots game - get 4 blackcurrant symbols anywhere on the reels and one of the blue berries in the logo will turn purple, turn all 4 purple to access the brilliant skills based Berry Good Bonus game.

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Royal Vegas Slots Game

Free Royal Vegas Slots Game

Bonus Games: 3
This super slots game has a Vegas Winning Streak bonus game, a Gamble Bonus game and the Vegas Jackpot Wheel bonus round in which every spin wins!

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Casino Slots

Free Casino Slots

Bonus Games: 6
This slot has 6 Bonus games featuring some of the most popular casino games: Video Poker, Roulette, Craps, Blackjack, Monopoly Slots & Cleopatra Slots.

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Craps Slots

Free Craps Slots

Bonus Games: 1
The Red Free Craps 4U Dice symbol is a scatter symbol and 2 or more on the reels gives you access to the superb Craps Bonus Game.

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Roulette Slots

Free Roulette Slots

Bonus Games: 3
Our roulette slot has 3 different versions of roulette to play in the bonus rounds; French Roulette, American Roulette and European Roulette.

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Summer Games Slots Game

Free Summer Games slots game

Bonus Games: 5
Our super Summer Games slot has 5 sports themed Bonus Games including skill based basketball game and archery games, a football gambling game and a Pentathlon pick an item bonus game.

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DomGame Slots Game

Free DomGame slots

Bonus Games: 2
The Archery Bonus Game is activated by getting 3 or more Robin Hood Bonus symbols. The Hidden Treasure Bonus Game is a brilliant twist on the usual pick an item type bonus game.

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Snakes & Ladders Slot

Free Paddy Power Slots Game

Paddy Power Casino have sponsored this fun slots game that features wilds, scatters, free spins feature & 2 bonus games including a snakes Charmers Bonus Game.

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Leo Vegas Slots Game

Free Leo Vegas Slots Game

New! Sponsored by Leo Vegas Casino this wild 25 payline slot game features bonus games, free spins, Loyalty Feature, and a progressive jackpot!

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Santa's Super Slots Game

Santas Super Slots Game

Bonus Games: 3
Santa's Super slot features 3 bonus games and a gamble feature.

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Cops 'n' Robbers Slots Game

Cops 'n' Robbers Slots Game

Bonus Games: 2
Three or more bonus symbols on the reels gains access to the Pick X Bonus Game - six characters will be presented for you to choose from but who has the big bonus? In the Loyalty bonus round you can win a progressive jackpot.

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Roxy Palace Slots Game

Free Roxy Palace Slots Game

Bonus Games: 3
Our Shooting Star bonus game is a test of your gaming skills while in the Palace Treasure bonus round simply pick treasure chests to reveal prizes. The Palace Goblet round will test your memory!

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Superior Slots Game

Free Superior Slots Game

Bonus Games: 1
Our Superior Slots game has a marvellous iSlots inspired Mafia bonus game in which your choices affect the story.

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Enchanted Garden Slots Game

Free Enchanted Garden Slots Game

Bonus Games: 2
Enchanted Garden slots game has two bonus rounds. There's a bingo game and a classic pick an item style bonus round - select 3 treasure chests from the 9 on offer to find and win bonus amounts.

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Slots Game

Free Slotastic Slots

Bonus Games: 3
Slotastic Slot has 3 bonus games to play; Pick The Envelope to find the credits, test your skills in the Catch the Oil Spill game while in the Honey to the Bee Bonus game guide the Bee to collect honeycombs

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Royal Vegas Slots Game

Free Royal Vegas Slots Game

Bonus Games: 3
This super slots game has a Vegas Winning Streak bonus game, a Gamble Bonus game and the Vegas Jackpot Wheel bonus round in which every spin wins!

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Free Blackjack Slots

Free Blackjack Slot

Bonus Games: 3
Our blackjack slot has 3 blackjack bonus games: Hi Streak Blackjack, Blackjack Switch and European Blackjack.

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Slots Jungle Slots Game

Free Slots Jungle Slots Game

Bonus Games: 3
3 brilliant bonus games feature in this slot. The Toucan and Monkey Bonus games test your skills while in the Briefcase bonus game the jungle animals will open briefcases at your request to reveal your prizes.

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Riches of Wonderland

Free Riches of Wonderland Slots Game

Bonus Games: 2
Our Riches of Wonderland slot is a fantastic looking video slot that features 2 bonus games. There's a Bingo Bonus Game triggered by the Alice symbol while the Madhatter's Hat Symbol triggers the pick an item game.

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In our games you will find a great selection of bonus games. Some of them are completely unique, to our knowledge they have never been used in an online casinos slot game. Others are the same as the bonus games you would find in popular slots games in a casino.

Free Spins Bonus

This bonus feature is in many slots games, both in our own games and in the slots you will find in casinos. It is pretty much what it says it is - you get a number of free spins awarded to you.

Normally to active free spins mode you have to get a specified symbol to land on the reels a certain number of times. The number of times the symbol displays on the screen at the same time normally dictates how many free spins you're awarded. For example in our Football Fever Slot, 3 stopwatch symbols or more wins you free spins. 3 wins you 3 free spins, 4 wins you 5 free spins and 5 wins you 8 free spins.

When the free spins mode is activated there is normally nothing for the player to do. They just sit back and watch as the free spins are automatically played for them.

In some free spins modes wins can be multiplied and sometimes more free spins can be won inside the free spins mode - this is known as retriggering free spins. There are many slight variations of the free spins modes.

Pick An Item Bonus

Pick an item bonus is also a pretty common bonus game in slots games. You're shown a selection of images to pick from.

Depending on the game, you get to pick one or more of the items. Each item has a prize hidden in or behind them, clicking the item makes the prize credit amount to appear.

Each time you activate the pick an item bonus round the prizes behind each item change so they are not the same each time. Depending on the game, the items may stay in the same position or switch locations.

Many of our games have pick an item bonus rounds including Monopoly Slots, Girls Best Friend Slot, Cleopatra Slots, and Pirates Slots to name just a few.

Gamble 50/50 Bonus

Another common type of bonus, the gamble bonus round or 50/50 bonus has a few variations. You gamble the credits won by the spin that activated the bonus game. You can either keep your winnings or gamble them all for a 50/50 chance of doubling them.

In our 50/50 gamble games, there is a card face down, you have to select if it's a black or red card. You can also select which suite you think the card is. If you select correctly you double your winnings and get the chance to guess again on another card. If you guess incorrectly you lose all your winnings and return to the reels.

We have several games that feature this type of bonus feature that gets activated after every winning spin. Some of the games that have this bonus game are Flash Cash, Halloween Party, and Summer Spins

Shooting Bonus Round

Although this type of bonus round is pretty common on our site, they are not so common if at all on slots games in casinos.

We have several different types of shooting bonus games. Each requiring slightly different skill levels. Some are shooting type of games where you have to through or shoot something at an object. Others are where you just have to click on moving items.

One of the highest skill level shooting bonus games is our Archery game in Summer Games Slot. You have to aim, judge the power of the shot and take into account the wind speed to try and hit the center of the target. The closer to the target you get the higher your winning credits.

Our snowball fight bonus game is unique to our Snowball slot. Once activated you get to take part in a snowball fight. You're represented by a little person with a red top, opponents wear blue tops. You move your little person around on the screen and click on them to prepare to throw a snowball. When you let go you throw a snowball at the opponent. There are many rounds in the bonus game, each round getting progressively harder.

Racing Bonus

A race bonus game is where you bet on the winner of a race, like horse racing or greyhound racing. This is another bonus round that is common on our site but not so common in slots games at casinos.

In our Summer Games Slot, you bet on a swimmer by selecting which country you think will win the race. The position your selected swimmer finishes in determines the amount you win.

In Santa's Super Slots you bet on which toy you think will win the race. You get to place different bet amounts on different toys. When the race ends the positions that the toys come and the amount that you have bet determines the amount you win.

Fireworks Bonus

This is another bonus game that is unique to Free Slots 4U. Our fireworks bonus round features in Fireworks slot and New Year Party slot.

We have two versions of the Fireworks bonus round. One version is based on the river Thames in London. While the other lets you pick from London, New York, Paris, and Sydney. Each location features iconic landmarks as the backdrop to your fireworks display.

In the fireworks bonus round, you get to build a fireworks display by buying fireworks with credits from a fireworks fund. You place each firework on a timeline at the bottom of the game. When you're happy with the positioning of the rockets, simply hit Start Show. Then sit back and watch your very own fireworks display. The more fans you please with your fireworks display, the more credits you win.

Bingo Bonus

Bingo is very popular, although we don't know of any slots games at casinos that have a bingo bonus round. So we made one!

The Bingo Bonus is what it says it is, you get to play Bingo in a bonus round. This bonus round can be found in our Bingo Slot. When playing the speed bingo bonus round you can manually daub numbers on your bingo card, or you can select auto-daub. Look out for three bingo bonus symbols on the reels as this activates the bonus game.

Tip: Selecting manual mode will have higher prize amounts, plus its more fun!

Video Poker Bonus

There are many video poker games in casinos but again to our knowledge none feature as a bonus round in a slots game.

Two of our slots, Casino Slots Slot and also Video Poker Slot feature video poker bonus rounds.

Video poker slot includes Deuces Wild Multi-Hand and Jacks or Better.

Casino Slots features Aces Faces video poker as one of its many bonus rounds.

All the poker games are games from our Free Video Poker 4U sister site.

Roulette Bonus

Like video poker, roulette is another game that tends to be a game in its own right.

Our Roulette Slot and Casino Slots Slot. Roulette slot features three versions of Roulette, French Roulette, American Roulette, and European Roulette. Casino Slots Slot features European Roulette.

All the Roulette games are from our sister site Roulette 4U.

Blackjack Bonus

Blackjack Bonus rounds can be found in our Blackjack Slot and also our Casino Slots Slot.

The Blackjack games are from our sites site Free Blackjack 4U. Spanish Blackjack is featured in casino slots slot.

Our Blackjack Slots game features Hi Streak Blackjack, Blackjack Switch, and European Blackjack.

Spin The Wheel Bonus

This bonus round is very much like the Wheel of Fortune. Simply spin the wheel and watch to see where it lands to show what you've won. Our Royal Vegas Slot features this type of bonus game.

We are continually coming up with new bonus game ideas. If you have an idea for a bonus game that you would like us to create in one of our games, simply let us know (using our Contact Us page) and we will see what we can do!

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