1. Watch the reel-side Collectors
Each of the five reels has its own named Collector sitting above it.
5 Mega Thunder Coins Feature Guide
This guide covers one thing: how to trigger 5 Mega Thunder Coins' four biggest features, the 5 Collectors, the Running Wins Bonus, Free Spins and Bonus Buy. Each section below breaks the activation sequence into a few short steps, paired with a screenshot so you can see exactly what to look for on the reels. For the full RTP, volatility, symbol paytable and strategy breakdown, read the full review. New to the basics? Start at the 5 Mega Thunder Coins overview or how to play first.
How to Fill the 5 Collectors
The 5 Collectors sit above the five reels, each with its own job: Collect, Restart, Double, Big and Mystery. Filling one comes down to landing coin symbols on the reel underneath it, not hitting a separate bonus round. Here's the activation sequence in four steps. For the full mechanical breakdown, including how it feeds the jackpot ladder, see the 5 Collectors explainer in the full review.
2. Land coin symbols on that reel
A coin landing on a given reel banks its value into that reel's Collector.
3. Watch for the X-coin
The Expanding Multiplier Wild can land and multiply whatever a Collector has already banked.
4. A filled Collector pays out its job
Collect, Restart, Double, Big or Mystery each resolves differently once its Collector is full.
How to Trigger the Running Wins Bonus
Running Wins is the coin-collection layer riding underneath the 5 Collectors. Coin and money symbols carry a cash value shown directly on the reel, and stacking them is how you climb 5 Mega Thunder Coins' four-tier jackpot ladder toward the Grand Jackpot.
1. Land coin symbols on any reel
Coin and money symbols land during normal play and route to that reel's Collector.
2. Check the value on the coin
Cash values print directly on the symbol, no separate multiplier screen needed.
3. Collection feeds the jackpot panel
Coins collect toward the four-tier ladder shown live on screen.
4. Hit a tier to win it
Enough collected value lands you on a jackpot tier, from Mini up to Grand at x2,000 the bet.
How to Trigger Free Spins
Free Spins runs as its own round on top of the base game, giving the Running Wins mechanic and the 5 Collectors extra room to build without touching your regular spin balance. Trigger conditions come straight from the base-game reels.
1. Keep spinning the base game
Free Spins triggers from the standard 4x5 reels, not a separate mode.
2. Watch for the trigger combination
Land the qualifying symbols and the round launches automatically.
3. Free Spins plays out on its own
Wins and Collector progress continue building without dipping into your balance.
4. Return to the base game
Once the round ends, play drops back to normal spins with Collector progress intact.
How to Use Bonus Buy
Bonus Buy gives you two options: skip straight to the Bonus Game for 80x your stake, or pay 2x your stake on Bonus Up: Running Spins to raise your trigger chance instead of buying in outright. Neither is a separate mode - the features themselves play out exactly the same either way.
1. Open the BUY panel
Tap the BUY button visible in the game's main interface.
2. Pick your entry
Bonus Game costs 80x your stake for instant entry; Bonus Up: Running Spins costs 2x your stake per spin and boosts your odds.
3. Confirm the price
The chosen buy-in deducts as a lump sum, or as an ongoing 2x stake, from your balance.
4. Play it out like a natural trigger
Running Wins collection and the jackpot ladder behave exactly the same as an organic hit.
Some casinos restrict Bonus Buy in certain jurisdictions, so the button may not show for everyone. New to the basic controls first? Start with how to play 5 Mega Thunder Coins before working through these triggers.
Frequently Asked Questions
How do I fill a Collector?
Land coin symbols on the reel underneath it. Each of the 5 Collectors banks value independently. See the full mechanic breakdown for how it feeds the jackpot ladder.
What triggers Free Spins?
The qualifying combination on the base-game reels, separate from the Collector triggers. It runs as its own round without touching your regular balance.
How does the Running Wins Bonus work?
Coin symbols with cash values printed on them land during play and collect toward the four-tier jackpot ladder, Mini through Grand.
How much does Bonus Buy cost?
80x your stake for instant entry into the Bonus Game, charged as a lump sum. Bonus Up: Running Spins costs 2x your stake per spin instead, raising your trigger chance rather than buying in outright.
Is Bonus Buy available everywhere?
It's built into the base game, but some casinos restrict Bonus Buy features by jurisdiction, so the BUY button may not appear for every player.
Where's the full RTP and strategy breakdown?
On the full review, which covers RTP, volatility, max win, the symbol paytable and bankroll strategy in depth.