Best Bonus Round Slots (2024): Top 5 Online Slots With In-Game Free Spins & Bonus Features

Old Passions Die Hard

It’s been a long way since the first one-armed bandits. Liberty Bell, the first slot machine in history, was built in 1895 by Charles Fey. The ground-breaking machine had only three reels and a single payline, with a 50-cent jackpot

Nevertheless, it introduced a new mania among casino-goers all over the United States soon after. The first video slots were launched in the 70s, finally freeing the game from its mechanical constraints. Online slots went several steps further, providing even more innovative gameplay and making the game accessible to anyone anywhere via smartphones.

Top 5 Online Slots With In-Game Free Spins & Bonus Features

Charles Fey wouldn’t imagine how far his creation would come. The five games listed below excel in different kinds of bonuses. Still, they have important things in common: they have plenty of special features!

Reels & Wheels XL – Best Bonus Round Slot Overall

Reels & Wheels XL, by Woohoo, has an interesting mix of classic and vintage elements. It runs on a 5x3 grid with 20 paylines and an RTP of 96%. Symbols include fruits, cards, a lucky seven, and a diamond. Here, you’ll also find a Jackpot Wheel, a Bonus Wheel, and free spins. The Jackpot Wheel can award five different progressive jackpots! Notice that the maximum prize per spin is 2,500x your bet, though.

The diamond represents the Wild, while three bonus symbols trigger the bonus wheel. Two bonus symbols plus a Free Spins symbol trigger 12 free spins. Free spins can be retriggered if the same combination lands again during the round. You can trigger the Jackpot Wheel while in the Bonus Wheel feature.

Rags to Witches – Best for Free Spins in Bonus Rounds

Rags to Witches was developed by Betsoft and released in 2022. It’s the perfect game if you’re looking for a creepy touch on your gaming. The 5x3 grid is framed with ivy with a background of carved pumpkins and a rather sinister countryside. It has 30 paylines and an RTP of 96.21%. It mixes high-value symbols like a witch, a skull, and a bat with low-paying card symbols shaped with bones, from 10 to Ace.

It also has a progressive jackpot feature, where players can win up to 3,355.5x their initial bets. Still, Rags to Witches excels for its free spins and bonus rounds. The Scatter is symbolized by a lamp with an evil smile, and you’ll need five of them to trigger 10 Free Spins. You’ll receive multipliers from 10x to 30x, depending on how many Scatters you get.

The progressive jackpot feature is triggered randomly. It’s also possible to buy your access to the free spins round with the Buy Feature by clicking on the cart button.

BIGGER CASH WIN – Top Choice for Wild Symbol Slot Bonus Games

If you want to feel like you’re playing in Las Vegas, you should consider trying Bigger Cash Win by Rival Gaming. It looks like a traditional 3x3 slot machine you’d find in a Vegas casino, with the most famous buildings of the Sin City in the background.

It has five paylines and an RTP of 95.86%. Symbols include cherries, lucky 7s, and Bar symbols. The game’s logo is also the scatter symbol. If you get three of them anywhere on the grid, you’ll be granted 15 free spins. The Wild symbol is framed with dollar bills and replaces any symbol to form a winning combination.

JACK AND THE GIANTS – Best for Multipliers in Bonus Round Slot Machines

Fairy tales are full of hidden treasures. You’ll find plenty of them at Jack and the Giants by Rival Gaming. The grid starts with a usual 5x3 structure, but it can grow to 5x5, and 243 ways to win. There are 15 symbols in this game, including cards from 10 to Ace and a variety of high-value symbols, from giants all the way up to the magic key.

Jack himself represents the Wild symbol. A bag of gold represents the Scatter symbol. When three or more scatters land on the screen, you receive from five to 15 free spins. There are two levels of free spins: In the Clouds and Land of the Giants. When the first level is triggered, Jack climbs the tree up to the second floor, where a new grid appears. If you get more Scatter symbols, Jack climbs to the next level (Land of the Giants), where you get even more free spins with cascading symbols on a 5x5 grid.

SUPER GOLDEN DRAGON INFERNO - Top-Rated Bonus-Buy Online Slot

Chinese-themed slots usually have lots of gold and special features. Super Golden Dragon Inferno by Betsoft surely doesn’t disappoint. It has a 5x3 structure, 243 ways to win, and a standard RTP rate of 96.43%, although it may also range between 92.10% and 94.03%, according to the developer.

The top prize is 2,916x. It has a Wild, a Random Wild, Stacked Mystery Symbols, and Nudging Wild Reels. The Hold & Win bonus feature offers four prize levels: Mini, Minor, Major, and Grand.

You can buy your access to the Hold & Win bonus feature by pressing on the cart in the bottom-left corner. You’ll receive three spins in this feature, where you can get money symbols up to 2.50 for a 25.00 coin value spent or a bet value of 0.25.

If you cover the entire grid with money symbols, you get the Grand prize. You can also receive a symbol for one of the prizes (Mini, Minor, Major, and Grand) during those spins, in which case you’ll receive this prize added to the sum of money symbols.