Slot enthusiasts are drawn to various games for numerous reasons, but those with bonus features tend to top the popularity charts. These enticing extras can turn a modest bet into a life-changing jackpot. Let’s dive into some of the best slot machines featuring bonus games, available both online and in brick-and-mortar casinos.

Best Online Slot Machines with Bonus Games

1. Starburst

Starburst is a classic in the world of online slots, beloved for its simplicity and accessibility for players with varying bankrolls. While it may appear basic, the game offers impressive payouts and the chance to hit big with the Starburst Expanding Wilds feature.

When a Starburst Wild lands on reels 2, 3, or 4, it substitutes for other symbols, expanding to cover the entire reel and granting a respin. If luck is on your side and you land five Wilds, you can walk away with a substantial jackpot. Starburst boasts an RTP of 96.09% and medium variance, making it a solid choice for players.

2. Book of Dead

Book of Dead takes players on an Egyptian adventure and is ideal for casual gamers due to its lower maximum betting limits. Despite this, it still offers the chance to win up to 250,000 coins through its free spins bonus game.

By landing three or more Book scatter symbols, players unlock the Sacred Chamber bonus round, where they receive 10 free spins. This feature can be retriggered infinitely, and an expanding symbol boosts payouts, making the RTP of 96.21% even more attractive.

3. Immortal Romance

Immortal Romance is a captivating vampire-themed slot from Microgaming that offers 243 ways to win and an impressive bonus system. Its four-level bonus round, the Chamber of Spins, enhances the gameplay experience.

Players begin with 15 free spins, with wins multiplied by 5x. Progressing through the bonus levels, players can unlock additional

free spins, including 20 spins with Cascading Reels and 25 spins featuring the Wild Vine feature. With an RTP of 96.85% and high variance, players can anticipate frequent smaller wins and the potential for a massive jackpot of 3,645,000 coins.

4. Bigger Bass Bonanza

Bigger Bass Bonanza is a sequel to the popular Big Bass Bonanza and introduces new features, including an expanded reel set. The game offers a robust free spins feature where wilds can lead to substantial wins.

With three, four, or five scatter symbols, players can earn 10, 15, or 20 free spins, respectively. During the free spins, wild symbols help to accumulate wins, and every fourth wild triggers an additional 10 free spins with multipliers. With a high RTP of 96.71% and volatility, this game is a fantastic option for thrill-seekers.

5. Fruit Party

Fruit Party may appear simplistic, but it offers exciting features and a maximum jackpot of 5,000x your bet. Players can benefit from free spins that can be retriggered endlessly and a Random Multiplier feature that activates during the game.

The Random Multiplier feature can provide boosts up to 256x your stake during the free spins round, which includes 10 free spins. With an RTP of 96.47% and medium variance, Fruit Party is a delightful choice for players looking for fun and winnings.

6. Wheel of Fortune

Wheel of Fortune is a classic slot game that has earned a dedicated following. With its Tripler Big Spin feature, players can enjoy substantial wins.

The game includes several bonus features such as the Wild Bonus and Mini Wheel. The Wheel of Fortune Bonus can be activated by landing five symbols, with potential wins reaching 10,000 coins. Additionally, the Triple Extreme Spin Bonus offers random multipliers on spins, with the chance to win up to 5,000,000 coins. The RTP is slightly above average at 96.1%, and the game has a higher variance.

7. Divine Fortune

Divine Fortune is a thrilling progressive jackpot slot from NetEnt. To trigger the local progressive jackpot, players must land three gold coins, with average payouts around $115,000.

The game features a standard RTP of 96.59%, but the jackpot lowers the RTP without the bonus to 92.52%. The game includes several bonus rounds such as Falling Wilds Respins and Overlay Wilds, while the free spins round can grant up to 12 spins.

Best Land-Based Slot Machines with Bonus Games

Many of the slots mentioned above can also be found in land-based casinos. Whether you prefer playing at home, on the go, or in a local establishment, there’s something for everyone!

8. Cleopatra

Cleopatra remains a timeless favorite, featuring a simple yet rewarding free spins bonus round where players can earn 15 spins with a 3x multiplier. This feature can be retriggered up to a maximum of 180 spins, making it a popular choice among players.

9. Zeus

Zeus invites players into the realm of Greek mythology with the potential for up to 100 free spins as a bonus. With three, four, or five scatter symbols, players can earn 10, 25, or 100 free spins, which can also be retriggered indefinitely.

10. Buffalo

Buffalo from Aristocrat is known for its volatility and 1,024 paylines. Players can earn up to 20 free spins with wild symbols that multiply wins by up to 3x. The bonus round is where the game shines, as re-triggering spins can lead to massive payouts.

11. Book of Ra

Book of Ra has garnered a massive following in Europe, thanks to its engaging gameplay and significant jackpot potential. With 10 free spins available, players can benefit from expanding symbols for extra wins. Although the volatility is high and the RTP is 95.1%, big payouts are achievable.

12. Rainbow Riches

Despite initial criticism for lacking a free spins round, Rainbow Riches offers incredible bonuses like the Pots of Gold Bonus and Road to Riches Bonus. The game features medium volatility and an RTP of 95.1%, ensuring players have opportunities for significant wins.

13. Bier Haus

Bier Haus features engaging graphics and an RTP of 96.28%. The free spins feature can award up to 80 spins, and with Persisting Wilds (sticky wilds), the bonus round can lead to substantial winnings.

14. 88 Fortunes

88 Fortunes combines free spins with four progressive jackpots for high winning potential, albeit with considerable volatility. Landing three Gong Scatters activates a bonus game with 10 free spins, where low-value symbols are replaced with higher-value ones.

Try Before You Bet

For those interested in exploring these exciting slot games, we recommend trying out the free versions first. This way, you can familiarize yourself with the mechanics, volatility, and overall gameplay experience before wagering real money.