Thunder Coins: Hold and Win - a compact 3x3 slot built around coin collection
Thunder Coins: Hold and Win keeps the look of a classic fruit slot, but its gameplay is built around the modern Hold and Win mechanic. Playson launches the slot on a compact 3x3 grid with five fixed paylines, so everything happens in a tight space and each spin is easy to follow at a glance. In practice, the rhythm revolves around watching the outer reels for bonus coin values while simultaneously looking for the Thunder Bonus on the middle reel. When it lands in the base game, the total value of all bonus coins is instantly added to the win, clearly shown on screen. The main excitement shifts to the respin bonus game, where sessions can end quickly or extend if new symbols keep landing, and jackpots can drop within the same flow alongside coin collection.
About this review
Quick facts
| Release date | May 30, 2024 |
|---|---|
| Provider | Playson |
| Game type | Video slot |
| Theme | Classic fruits / Electric grid |
| Grid size | 3x3 |
| Paylines | 5 (fixed) |
| RTP | Up to 95.66% (depends on the casino) |
| Volatility | Medium-high (provider classification) |
| Min bet | 0.20 (currency dependent) |
| Max bet | 100 (currency dependent) |
| Max win | 5,150x bet |
| Special features | Hold and Win, Thunder Coins, respins, Pile of Gold |
| Jackpots | Mini 25x, Minor 50x, Major 150x, Grand 1000x |
| Wild symbol | Yes (substitutes all symbols except Bonus and Thunder Bonus) |
| Bonus symbols | Yes (trigger features) |
| Thunder Bonus | Yes (appears only on reel 2) |
| Free spins | No |
| Autoplay | Yes |
| Turbo mode | Yes |
Thunder Coins: Hold and Win - article outline
- Reel layout and symbols - A 3x3 grid with classic fruit symbols, BARs, lucky sevens, bells, and bonus coins that trigger the core features.
- How the Thunder Coins feature works - The Thunder Bonus symbol appears on reel 2, collects all bonus coin values on the grid, and adds them to the spin win.
- Bonus game mechanics - Land one bonus symbol on each reel to trigger the respin round, where only bonus coins, Thunder Bonus, and jackpot coins can appear.
- Jackpot system - Four types of jackpot coins can appear in the bonus game, each with a fixed multiplier.
- Pile of Gold feature - A bonus coin in the base game can trigger Pile of Gold. It adds extra bonus coins to reels 1 and 3 plus a Thunder Bonus on reel 2 to speed up the bonus trigger.
- Paylines and bets - Five fixed paylines pay left to right, while the bet size is adjusted via the control panel at the bottom.
- Pros and cons - An honest breakdown of what works well in Thunder Coins and what feels weaker compared to similar slots.
- Demo and real money play - Try Thunder Coins in demo mode here, then see where you can play for real money based on your region and available payment methods.
- FAQ - Short answers about Thunder Coins gameplay, features, and technical details.
1. Game Layout and Symbols
Thunder Coins uses a 3x3 grid (three reels, three rows) with five fixed paylines. It looks like a classic fruit slot, but the coin symbols do the real work.
Regular symbols and payouts
The base set is pure fruit machine: cherries, lemons, oranges, plums, watermelons, grapes, BARs, bells, and red 7s. With five fixed lines, every spin covers all paylines, and the goal is three same symbols on a line.
- Cherries pay 1x for three on a line.
- Lemons, oranges, and plums pay 4x.
- Watermelons and grapes pay 16x.
- BARs pay 20x.
- Bells pay 30x.
- Red 7 is the top regular symbol at 50x for three on a line. It also works as the Wild.
Wild, Bonus, and Thunder Bonus
- The Wild can replace any symbol except Bonus and Thunder Bonus.
- Bonus symbols are gold coins with a lightning bolt. In the main game they appear on reels 1 and 3 only. Each coin has a bet-multiplier value (x1, x2, x3, x5, x7, x10, x15) and the game converts it into a cash amount at your current bet.
- Thunder Bonus looks similar but appears on reel 2 only. It collects bonus coin values and adds them to the current win or Bonus Game total.
Jackpot coins
Jackpot coins use the same style, but in four colors:
- Mini (purple)
- Minor (blue)
- Major (green)
- Grand (red)
These coins appear in the Bonus Game and use fixed bet multipliers.
2. How the Thunder Coins Feature Works
Thunder Coins is the main mechanic. It starts when Thunder Bonus appears on reel 2 with at least one Bonus coin on the grid.
What happens on that spin
- Bonus coins appear with one of these values: x1, x2, x3, x5, x7, x10, x15.
- Thunder Bonus appears on the middle reel.
- Thunder Bonus takes the values from all visible Bonus coins and adds the total to the spin win.
A simple case: you get Bonus coins worth x5 and x10 and Thunder Bonus appears on reel 2 in the same spin. The feature adds x15 on top of any line win you already got.
This works in both parts of the game:
- Main Game: the added total goes into that spin win.
- Bonus Game: the added total goes into the Bonus Game total win, together with any jackpot wins from that session.
3. Bonus Game Mechanics
The Bonus Game is the Hold and Win round, and it drives the bigger wins in Thunder Coins.
How to start it
You enter the Bonus Game when you get at least one bonus-type symbol on each reel in a single spin:
- Bonus coin on reel 1
- Thunder Bonus on reel 2
- Bonus coin on reel 3
How respins work
After the feature starts:
- You get 3 respins.
- If a spin adds a new symbol, the respin counter goes back to 3.
- If a spin adds nothing new, you lose 1 respin.
- The Bonus Game ends when respins hit zero.
What you see in the Bonus Game
During the feature, the reels use only the special set: Bonus coins, Thunder Bonus, and jackpot coins. Thunder Bonus stays on reel 2 and adds coin values into your Bonus Game total.
At the end, the game pays the total from the Bonus Game, which includes coin values plus jackpot wins from that session.
4. Jackpot System
Thunder Coins shows four fixed jackpot tiers in the top jackpot panel:
- Mini: 25x bet
- Minor: 50x bet
- Major: 150x bet
- Grand: 1,000x bet
These jackpots are paid as bet multipliers, so the cash amount scales with your bet.
When jackpots appear
Jackpots are part of the Bonus Game. During respins, jackpot coins can appear on the grid. When a jackpot coin appears, that jackpot is added to your Bonus Game total. You can win more than one jackpot in the same Bonus Game session.
Jackpots and Thunder Coins
In the Bonus Game, jackpot coins add their fixed value to your Bonus Game total, along with the coin values on the grid.
5. Pile of Gold Feature
Pile of Gold is a random boost in the base game. It can start after a Bonus coin appears.
When it happens, the game can add extra Bonus coins on reels 1 and 3 and may include a Thunder Bonus on reel 2. This can get you into the Bonus Game faster.
You cannot start Pile of Gold on purpose. It comes as part of random Bonus coin drops in the base game.
6. Paylines and Bet Options
Thunder Coins uses five fixed paylines. You cannot change the number of lines, and every spin covers all five.
Payline rules
- Wins pay left to right.
- You need three same symbols on a payline.
- A line gives only one win per spin, and it uses the higher one.
Bet controls
The bet panel sits at the bottom. Use minus and plus to change the stake. Bets run from 0.20 to 100 per spin. Jackpot cash values update with your bet.
Autoplay and Turbo
- Autoplay sits on the right side with the Auto (A) button and you can stop it right away.
- Turbo is part of the main spin control. Hold the spin button to speed up spins.
7. Pros and Cons
Pros
- Thunder Coins changes what you watch on each spin. You track Bonus coins on the sides and look for Thunder Bonus on reel 2.
- The Bonus Game keeps pace. The 3-respin reset can keep the round alive for a while when symbols keep coming.
- Four jackpots add clear targets inside the Bonus Game.
- The 3x3 grid stays simple and easy to read.
- Bets from 0.20 to 100 fit small and bigger budgets.
Cons
- Even at its highest RTP setting (95.66%), the game sits below the 96% mark many slots aim for.
- Medium-high volatility means dry runs, with long stretches between small wins.
- No Free Spins mode. The bonus content is Hold and Win only.
- Max win is 5,150x. Good, but not in the extreme range.
- If you play other Hold and Win slots from the same studio, the loop feels familiar.
8. Demo and Real Money Play
The demo runs on this page. No download, no account. It lets you learn the pace, see how Thunder Coins adds value, and see how the Bonus Game and jackpots connect.
For real money play, use a licensed casino that has this slot, supports your currency, and has clear terms for deposits and withdrawals.
casinoreview.click helps you compare casinos by country, payment methods, and license, so you get to a good option faster.
Always check that real money play is legal where you live and the site has a valid license.
9. Common Questions
What is the RTP of Thunder Coins?
How volatile is Thunder Coins?
What is the maximum win?
Can you get free spins?
How do you start the Bonus Game?
Do Thunder Bonus symbols appear on reel 2 only?
Are the jackpots progressive?
How many respins do you get in the Bonus Game?
Can you play Thunder Coins on mobile?
What is the minimum bet?
Does Thunder Coins have autoplay?
How often does the Bonus Game start?
How we built this page
- Feature rules and symbol rules are taken from the in‑game paytable and in‑game help for this title.
- Numbers (RTP notes, bet limits, max win) follow the game info for this title. Casinos may use a different setup.
- Screenshots used on this page were captured from the demo version (UI, coin values, jackpot panel).