Temple of Thunder II Bonus Buy Slot Review
by EvoplayReleased Feb 1, 2024
Free demo - play instantly in your browser
Mystery symbols split into two modes - coins and wilds in base game, wilds only in free spins. Hold&Win bonus awards an Epic Prize of 3,000x for filling all 15 positions.

Specifications
| Game Type | Slots |
|---|---|
| RTP | 95.82% |
| Volatility | High |
| Max Win | 3,624x |
| Grid | 5x3 |
| Paylines | 20 fixed paylines |
| Min Bet | $0.1 |
| Max Bet | $75 |
| Hit Freq | 28.46% |
Temple of Thunder Series
Temple of Thunder II Bonus Buy Slot Overview
An Olympus slot where the gold coins matter more than the gods.
Zeus, Hades and Hera sit at the top of the paytable, but the reels are mostly a delivery system for coins. The game is built around a Hold and Win round that fires when five or more coins land at once, and those coins arrive through mystery symbols flipping over on a 5x3 grid. Twenty fixed paylines handle the housekeeping in between.
This is the purchase edition of Temple of Thunder II, which means a red Bonus Buy button on the left rail and two prices rather than one. Base RTP is 95.82%, and the 3,624x ceiling is really the Epic Prize plus whatever coin values happened to come with it.
Theme & Design
The setting is oddly cheerful for a game with thunder in the title. Bright blue daytime sky, rolling green hills, a few small trees along a path that winds off toward pale blue mountains. It looks like a nice afternoon in Arcadia. The only weather shows up when a payline connects and a jagged bolt of lightning snaps across the reels, which sit in a gold frame over deep purple panels.
Zeus is the best of the portraits: white beard, gold laurel crown, red drape behind him. Hades gets a green halo and a jade-set crown, Hera a fan of purple feathers over silver armour. The four royals are cracked stone letters in pink, purple, green and pale blue, clean but plain next to the painted gods. Down the left rail four prize plaques (Epic, Major, Minor, Mini) glow from the first spin, with the Bonus Buy button parked underneath them.
Symbols & Paytable
| Symbol | Payout |
|---|---|
| Zeus | 1x / 5x / 15x for 3/4/5highest paying god |
| Hades | 0.8x / 2x / 12.5x for 3/4/5 |
| Hera | 0.8x / 2x / 12.5x for 3/4/5 |
| A, K, Q, J | 0.4x / 1x / 4x for 3/4/5four cracked stone royals, all on the same rate |
| Wild | no payout of its ownsubstitutes everything except Free Spins and coin symbols, lands on any reel |
| Free Spins symbol | 3 award 10 free spinsreels 2, 3 and 4 only |
| Mystery symbol | pays as whatever it revealsregular symbols, wilds or coins in the base game, no coins in free spins |
| Coins | 1x, 2x, 3x, 5x, 9x, 20x, 25x plus Mini 10x, Minor 50x, Major 500xfive or more on one spin start Hold and Win |
Features & How They Work
Mystery Symbols
Mystery symbols land anywhere on the reels and then reveal what they actually are. In the base game that is a regular symbol, a wild, or a coin, which makes them the only route into the bonus that does not run through the purchase menu. During free spins the coins are taken out of the pool, so a reveal there gives regular symbols or wilds and nothing else.
Hold and Win, and the Epic Prize
Five or more coins on a single spin lock in place and start a respin round with three respins in hand. Every new coin sticks and resets the counter back to three. Nothing but coins can appear during the round, so each respin is a straight yes or no. Regular coins are worth 1x, 2x, 3x, 5x, 9x, 20x or 25x the bet, with three named tiers above them: Mini at 10x, Minor at 50x and Major at 500x. The round closes when the respins run out or all fifteen positions are full, and every value on the board is summed and paid. Fill all fifteen and the Epic Prize adds 3,000x bet on top of that total.
Free Spins
Three Free Spins symbols on reels 2, 3 and 4 award ten spins at the triggering bet. Three more during the round add another ten. Wilds keep landing on every reel and mystery symbols keep flipping, but with the coin pool switched off for the duration this is a pure payline round with no way into the respin bonus.
Two-price Bonus Buy
The buy menu has two doors. Ten free spins cost 51x total bet and run at 96.05% RTP; the Hold and Win round costs 47x and runs at 95.70%. Buying free spins spins the three trigger symbols in, while buying the bonus drops five coins with random values straight onto the reels. Both work in the base game only, and some markets have the menu switched off entirely.
Screenshots

How Temple of Thunder II Bonus Buy Plays
The base game pays often enough to keep the balance moving, a shade over 28% of spins landing something, and almost none of it registers. Most hits are a couple of royals on one line. The stretches between coins are where the session actually sits, and the mystery symbols are the only thing worth watching, because a reveal that turns three cells gold is the difference between another nothing spin and a bonus.
Then the respins start and the game turns into something else. Three respins, reset on every new coin, fifteen cells to fill. Two coins back to back and the board looks alive; two blanks and it is done. That pull, one more coin buying three more chances, is the sharpest thing in the game (the kind of round you either lean into or sit out).
Free spins are the quieter half and, for my money, the duller one. With coins pulled from the pool, ten spins comes down to whether wilds stack in useful places. Sessions built around the buy button end up looking alike: a flat run of base spins, a purchase, a short burst, back to flat.
Pros & Cons
Pros
- The respin board is only fifteen cells, so the Epic Prize stays a visible target rather than an abstraction
- Two separate buy prices let players pick which feature to chase instead of taking one fixed package
- A single Major coin is worth 500x, so one good drop can carry an entire bonus round
- Mystery symbols give the base game something to actually watch for
Cons
- 95.82% base RTP is below the modern average, and paying 47x for Hold and Win drops it to 95.70%
- Line wins are tiny: five Zeus pays 15x, and the four royals all sit on the same 4x rate
- Free spins cannot produce coins, so the more expensive purchase is also the weaker feature
- Coin tier naming is muddled, with the Mini at 10x paying less than an ordinary 25x coin
- A sunny pastoral backdrop undercuts the thunder-god premise
Is Temple of Thunder II Bonus Buy Worth Playing?
Evoplay built a decent coin game and dressed it in a sunny postcard. The respin round is well judged, the Epic Prize gives it a finish line you can see, and the two-price buy menu is a smart bit of design next to studios that give you only one door. Against that: a below-average base RTP, a cheaper purchase that returns less than the pricier one, and a free spins round that had its best toy removed on purpose.
It works in short bursts around the buy button rather than as a long session, and nothing in it will surprise anyone who has played a few hold-and-win titles. The coin board carries the game; everything around it is scenery.
Frequently Asked Questions
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Reviewed by Arina, PR & Content Manager
PR & Content Manager at SlotsReach
Published 4 Aug 2026 · Updated 4 Aug 2026