Online casinos continue to grow in both popularity and sophistication. In 2024, the global iGaming market reached over €100 billion, driven by new technologies, immersive graphics, and enhanced mobile access. However, only a select few games consistently deliver large wins and retain player loyalty worldwide. This analysis highlights five proven titles that combine high payout potential, balanced volatility, and certified fairness across licensed platforms.
How Casinos Choose Games with High Payout Rates
At Z Casino and other reputable casino platforms licensed under the Malta Gaming Authority since 2011, the game selection process prioritises fairness and payout transparency. Operators analyse factors such as Return to Player (RTP), volatility, and jackpot frequency before promoting games in their lobbies.
For players, these metrics determine whether a game offers frequent smaller wins or rare, life-changing jackpots. In most regulated environments, RTP values must be published—usually between 94% and 99%.
Fact About Certification
All legitimate online slot and table titles undergo testing by independent laboratories such as eCOGRA or iTech Labs. This ensures that the RNG (Random Number Generator) operates fairly and payouts match published data.
Mega Moolah Delivers Record Jackpots
No discussion about high-paying casino games is complete without mentioning Mega Moolah by Microgaming. Known as the “Millionaire Maker,” this progressive jackpot slot has awarded multiple eight-figure prizes since its release in 2006.
The game connects hundreds of casinos worldwide into one shared network. Each spin contributes a fraction—typically 1%—to the jackpot pool, which can reach over €15 million.
| Feature | Detail |
| Developer | Microgaming |
| RTP | 93.42% |
| Volatility | Medium |
| Top Win | Over €18.9 million |
| Network Type | Progressive Jackpot |
Although the RTP is slightly below average due to its jackpot funding mechanism, the prize potential is unmatched. The most recent headline win occurred in 2023 when a UK player hit €12.4 million from a €0.75 spin.
Tip on Playing Progressive Slots
Players should always confirm minimum bet eligibility before spinning. Some titles require maximum stake activation to qualify for the jackpot.
Starburst Offers Consistency and Simplicity
Developed by NetEnt, Starburst remains one of the most iconic and widely played slots globally. Released in 2012, it combines low volatility with a 96.1% RTP, ensuring frequent but moderate payouts.
The appeal lies in its simplicity—five reels, ten paylines, and expanding wilds that trigger both ways. It is featured in nearly every major casino’s free spin promotions, making it a favourite among casual players.
| Feature | Detail |
| Developer | NetEnt |
| RTP | 96.1% |
| Volatility | Low |
| Max Win | 500x bet |
| Special Feature | Expanding wild re-spin |
Starburst is often used for welcome free spins, providing an accessible entry point for beginners. Despite its age, the slot continues to generate millions of daily spins due to its timeless mechanics.
Why Starburst Retains Popularity
Its consistent payout rhythm appeals to players seeking low-risk entertainment, while its RTP outperforms most branded titles by 1–2%.
Book of Dead Combines Adventure and Volatility
Play’n GO’s Book of Dead remains the cornerstone of “book-style” slot gaming. Released in 2016, it offers high volatility and a 96.21% RTP, making it ideal for thrill-seekers.
The game’s standout feature—the Free Spins Bonus with expanding symbols—can deliver wins up to 5,000x the stake. Book of Dead’s adventurous Egyptian theme, coupled with cinematic visuals, has helped it maintain relevance for nearly a decade.
| Feature | Detail |
| Developer | Play’n GO |
| RTP | 96.21% |
| Volatility | High |
| Max Win | 5,000x stake |
| Special Feature | Expanding symbol bonus |
This slot also influenced numerous sequels, including Legacy of Dead and Rise of Merlin, all sharing the same base mechanic.
Volatility Management Strategy
Due to high variance, players benefit from using smaller bets across extended sessions to endure dry streaks and wait for high-paying bonus rounds.
Lightning Roulette Redefines Live Gaming
Introduced by Evolution Gaming in 2018, Lightning Roulette revolutionised traditional roulette by blending live-dealer realism with random multipliers. It boasts multipliers of 50x to 500x on selected numbers, turning standard bets into explosive payouts.
| Feature | Detail |
| Developer | Evolution Gaming |
| RTP | 97.30% (standard bets) |
| Volatility | Medium |
| Max Win | 500x bet |
| Setting | Live studio broadcast |
The game streams from custom-built studios in Riga and Malta, using advanced RNG-certified software to ensure fairness in lightning number selection.
Player Engagement Data
In 2024, Evolution reported over 1.2 billion spins played on Lightning Roulette alone, making it the most popular live casino title globally.
Sweet Bonanza Adds Cluster Mechanics
Pragmatic Play’s Sweet Bonanza introduced a refreshing approach to slot design through cluster pays and tumble mechanics. Instead of paylines, wins occur when eight or more symbols appear anywhere on the grid.
The game includes a “Buy Bonus” option that instantly triggers the multiplier-rich free spins round—an element especially appealing to high-stakes players.
| Feature | Detail |
| Developer | Pragmatic Play |
| RTP | 96.51% |
| Volatility | High |
| Max Win | 21,100x stake |
| Special Feature | Cluster pays with tumbles |
Its bright, candy-themed visuals mask serious win potential, especially when multipliers of up to 100x combine during bonus rounds.
Mathematical Balance
The game’s hit frequency of approximately 23% allows frequent base game wins, maintaining player engagement even during prolonged play.
Comparing the Top Five Titles
Each of the five games caters to different player profiles—from risk-averse casuals to aggressive jackpot hunters.
| Game Title | Type | RTP | Volatility | Max Win | Ideal Player |
| Mega Moolah | Jackpot Slot | 93.42% | Medium | €18.9 million | High-risk jackpot chasers |
| Starburst | Classic Slot | 96.1% | Low | 500x | Beginners and steady players |
| Book of Dead | Adventure Slot | 96.21% | High | 5,000x | Risk-takers and strategists |
| Lightning Roulette | Live Table | 97.3% | Medium | 500x | Live gaming enthusiasts |
| Sweet Bonanza | Cluster Slot | 96.51% | High | 21,100x | High-volatility fans |
While Mega Moolah dominates with its monumental jackpots, Lightning Roulette provides steady, skill-influenced returns. Meanwhile, Sweet Bonanza and Book of Dead attract thrill-seekers drawn to volatility and multiplier potential.