Help File
Thunder Drums Serengeti Sun™
Thunder Drums Serengeti Sun is a Bet 20, 25 Lines 3x5 Reel slot game with Free Games and a Bonus Feature.
During regular play, the goal is to achieve a winning combination of symbols by matching symbols on at least reels 1 and 2.
Payouts depend on the number of coins played and the winning combination of symbols achieved.
The theoretical average return to player (RTP) is 96.02% with any bet.
The expected payback reflects the return across a very large number of spins by numerous players over an extended period of time and cannot be affected by the player's strategy.
Any combination of wins in a single game is limited and will not exceed 0.
It may not be possible to reach this limit in a single game from every bet configuration.
Game Rules
RULES
- Play bet 20 for 25 lines.
- All wins begin with the leftmost reel and pay left to right on consecutive reels, except SCATTER which pays any.
- SCATTER wins are added to payline wins.
- All wins shown at 1 credit bet and multiplied by the bet multiplier.
- WILD symbols multiply wins up to 125x.
- Payouts are made according to the Paytable.
- Highest win only on each selected payline.
- Wins on different paylines are added.
- All wins on selected paylines only except SCATTER.
- Malfunction voids all pays and plays.
WILD
- Substitutes for all symbols except scatters {GOLDCOIN}, {BLUECOIN}, {GREENCOIN} and {REDCOIN}.
- Appears on reels 2, 3 and 4 during base game only.
- Wins with {WILD} are multiplied by the Wild Multiplier.
- On any spin, the Wild Multiplier may be 2x, 3x, 4x, or 5x.
- Wild Multiplier is random and appears on the moon in the top right corner.
SCATTER
- {GOLDCOIN}, {BLUECOIN}, {GREENCOIN}, {REDCOIN} Appears during base game only.
- {SCATTER} Substitutes for all symbols.
- Appears on reels 2, 3 and 4 during free games only.
- Appears during Bonus Feature.
THUNDER PRIZE + FREE GAMES
- During the base game, if 5 or more {GOLDCOIN} appear, a prize WILL be awarded.
- The prize awarded will depend on the combination of {BLUECOIN} or {GREENCOIN} that also appear during the base game as per the table below.
| Number of {GOLDCOIN} |
Number of {BLUECOIN} |
Number of {GREENCOIN} |
Prize |
| 5 or more |
1 or more |
1 or more |
Awards the Super Thunder Prize + Free Games Feature |
| None |
Awards the Thunder Prize x2 + Free Games Feature |
| None |
1 or more |
Awards the Thunder Prize + Free Games Feature |
| None |
Awards the Sum of values on GOLDCOIN + Free Games Feature |
- During the base game, if fewer than 5 {GOLDCOIN} appear, a prize MAY be awarded.
- The prize awarded will depend on the combination of {BLUECOIN} or {GREENCOIN} that also appear during the base game as per the table below.
| Number of {GOLDCOIN} |
Number of {BLUECOIN} |
Number of {GREENCOIN} |
Prize |
| Fewer than 5 |
1 or more |
1 or more |
May award the Super Thunder Prize + Free Games Feature |
| None |
May award the Thunder Prize |
| None |
1 or more |
May award the Thunder Prize + Free Games Feature |
- During the base game, {GOLDCOIN} display prizes from the table below.
- {GOLDCOIN} prizes are shown multiplied by the bet multiplier.
- The Thunder Prize is the sum of values displayed on all {GOLDCOIN} plus prizes from the table below, which can be awarded 3 – 30 times.
- The Super Thunder Prize is the Thunder Prize plus additional prizes from the table below, which can be awarded 3 – 30 times.
| {GOLDCOIN} Prize |
Thunder Prize |
Super Thunder Prize |
| 8, 12, 16, 20, 32, 40 |
4, 8, 12, 16, 20 |
4, 8, 12, 16, 20 |
- Prizes shown at 1 credit bet.
- All prizes multiplied by the bet multiplier.
FREE GAMES
- 3 free games are awarded.
- {SCATTER} only appears on reels 2, 3 and 4 and substitutes for {Sym01}, {Sym02}, {Sym03}, {Sym04} and {Sym05}.
- {SCATTER} resets the number of games remaining to 3.
- If no {SCATTER} lands during the first 3 free games, then 3 extra games are awarded.
- Each {SCATTER} that lands awards the Golden Drum Prize.
- If {BLUECOIN} and {GREENCOIN} were present during the trigger of the Free Games Feature, then the Golden Drum Prize has value equal to the Super Thunder Prize.
- If {BLUECOIN} was present but not {GREENCOIN}, or {GREENCOIN} was present but not {BLUECOIN}, during the trigger of the Free Games then the Golden Drum Prize has value equal to the Thunder Prize.
- If {BLUECOIN} and {GREENCOIN} were not present during the trigger of the Free Games, then the Golden Drum Prize has value equal to the sum of value displayed on the triggering {GOLDCOIN}.
- Only {SCATTER}, {Sym01}, {Sym02}, {Sym03}, {Sym04} and {Sym05} appears during the free games.
- Free games are played at the triggering lines and bet.
BONUS FEATURE
- During the base game, 1 or more {REDCOIN} may trigger the Bonus Feature.
- 16 {SCATTER} will appear.
- Touch a {SCATTER} to reveal a normal symbol {GRAND}, {MAJOR}, {MINOR}, {MINI} or a special symbol {UP}.
- If 3 matching normal symbols have been revealed, along with 2 or fewer special {UP} symbols, the corresponding Bonus will be awarded from the Non-Upgraded Prize column.
- If 3 matching normal symbols with 3 special {UP} have been revealed the corresponding Bonus will be awarded from the Upgraded Prize column.
- If 4 {UP} are revealed, the DOUBLE GRAND BONUS will be awarded.
- The feature ends when a Bonus has been awarded.
- The DOUBLE GRAND BONUS is equal to twice the GRAND BONUS, and does not upgrade.
- The chances of each Bonus symbol being revealed are not equal.
| Matching Symbols |
Non-Upgraded Prize |
Upgraded Prize |
| {UP},{UP},{UP},{UP} |
DOUBLE GRAND BONUS |
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| {GRAND}, {GRAND}, {GRAND} |
GRAND BONUS |
DOUBLE GRAND BONUS |
| {MAJOR}, {MAJOR}, {MAJOR} |
MAJOR BONUS |
GRAND BONUS |
| {MINOR}, {MINOR}, {MINOR} |
MINOR BONUS |
MAJOR BONUS |
| {MINI}, {MINI}, {MINI} |
MINI BONUS |
MINOR BONUS |
- Reveal 3 {UP} to upgrade Grand Bonus, Major Bonus, Minor Bonus and Mini Bonus by one level.
- Mini, Minor, Major, Grand, are shown on Game Screen at selected bet.
- If Double Grand is available to be won, it is shown on Game Screen at selected bet.
- Mini, Minor, Major, Grand and Double Grand are fixed, are not progressive, and are not multiplied by the bet multiplier.
- Higher Bet Multipliers increase your chance of achieving a BONUS OR increase the BONUS Prizes.
How to Play
- Step 1: Choose your BET
- Step 2: SPIN
Paytable amounts are fixed and prizes are multiplied by the Bet Multiplier.
The game displays all your details in the following display fields.
- Balance: Displays your total balance.
- Win: Displays the amount won in the spin.
- Total Bet: Displays the total wager staked.
- Total Win: Displays the accumulated wins during free games.
- Spin Counter: Displays the number of free games remaining during Free Games feature.
MAIN GAME BUTTONS:
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SPIN
- Spins the reels.
- The SPACE BAR can also be used to spin when playing on Desktop.
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STOP/SKIP
- During Base Game button will STOP the reel spin.
- During Free Games button will STOP the reel spin or SKIP to the next spin.
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SETTINGS
- View available sound settings and paytable buttons.
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CLOSE SETTINGS
- Close the Settings display.
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PAYTABLE
- View game rules and pay awards for winning symbol combinations.
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MUTE
- Mutes sound and ambient volumes.
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UNMUTE
- Unmutes sound and ambient volumes.
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ADJUST BET
- Total Bet menu to adjust bet.
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TOTAL BET MENU
- Click states from left to right:
- Lower the current Total Bet.
- Close the Total Bet Menu.
- Increase the current Total Bet.
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AUTOPLAY
- View and set AUTOPLAY options.
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STOP AUTOPLAY
- Displays the remaining amount of AUTOPLAY spins, click this button to STOP AUTOPLAY and return to normal play mode.
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TURBO
- Enables fast play where reels spin faster and stop earlier or as early as possible.
- TURBO can be turned off at any point during the game.
- Activating TURBO does not influence the results of the spins.
- Only base games are eligible.
- Some features and options may not be available in your jurisdiction.
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This is game rules version 4, dated October 6, 2025