Modern Slot Features Explained
Megaways, clusters, cascades, and bonus buys — understand the mechanics that power today's most exciting slots.
Megaways Slots
Introduced by Big Time Gaming, the Megaways mechanic uses random reel modifiers to change the number of symbols on each reel with every spin. This creates a variable number of ways to win — up to 117,649 on a 6-reel slot. Popular Megaways titles include Big Time Gaming's Bonanza, Pragmatic Play's Gates of Olympus Megaways, and Red Tiger's Gonzo's Quest Megaways. The volatility is typically high, with big wins coming from maximum symbol combinations.
Cascading/Tumbling Reels
When you land a winning combination, the winning symbols disappear and new symbols cascade down from above. This allows multiple consecutive wins from a single spin without additional cost. Many modern slots combine cascading reels with increasing multipliers — each cascade increases the multiplier. Sweet Bonanza (Pragmatic Play) and Reactoonz (Play'n GO) are excellent examples.
Cluster Pay
Instead of traditional paylines, cluster pay slots award wins when groups of identical symbols connect horizontally or vertically. You typically need 5+ connected symbols for a win. The larger the cluster, the bigger the payout. Reactoonz, Sugar Rush, and Cluster Tumble are popular cluster pay titles.
Bonus Buy / Feature Buy
This feature lets you pay a premium to trigger the bonus round immediately:
- 💰 Typical cost: 80-100x your base bet
- ⚠️ High risk — you're paying for the bonus, but it's not guaranteed to be profitable
- 📊 Mathematically, bonus buys have the same expected return as playing normally
- ⏰ Main advantage is time-saving — skip the base game grind
- 🎯 Popular bonus buy slots: Gates of Olympus, Sweet Bonanza, Dog House Megaways
Hold & Spin
Made famous by Aristocrat's Lightning Link, hold & spin features trigger when enough special symbols (usually coins or orbs) land. The special symbols lock in place and you receive a set number of re-spins. If additional special symbols land during re-spins, they lock in and the re-spin count resets. Filling the entire grid typically awards a grand jackpot.
Frequently Asked Questions
Written by
James Memory
Casino & Betting Experts
James analyses slot mechanics and game mathematics to help SA players understand the games they play.
Find Your Perfect Casino
Compare SA's top-rated casinos, bonuses, and games. Gamble responsibly.
Always gamble responsibly. Read our responsible gambling guide. National Gambling Helpline: 0800 006 008.