Professor Clanks Combinator

Welcome to Professor Clank's Combinator™ Video Slot.

This game has :

Pick your bet amount and push Play button.
Play Button - Places a bet then starts the Base Drop.
Menu Button - Opens a window where the player can view info pages; go to lobby; change bets; configure autoplay (if available) and adjust game settings. It defaults to info pages.
Balance Meter - Display the player's current balance.
Total Bet Meter - Display the total wager staked.
Win Meter - Display the current win amount.
Info Button - Display info pages.
Return to Game Button - Go back to Base Game.
Home Button - Go to Lobby. Configurable per operator.
Autoplay Button (if available) - Opens Autoplay configuration window where the player can select the desired number of autoplay and start autoplay.
Stop Autoplay Button (if available) - Stops autoplay. Number of autoplays remaining will be shown over the button.
Bet Settings Button - Opens Bet configuration window, where player can select the desired bet amount.
Game Settings Button - Open Game settings configuration window, where the player can adjust the following: turn sounds On or Off; Turn background music On or Off; Turn full screen mode On or Off (if available); Turn left hand mode On or Off (if available).
Sound Buttons - turn sound On or Off respectively.
Pressing the Space bar will initiate Base Drop.
Bonus Meters - Shows Bonus amounts.
Feature Buy Button (if available) - Opens a confirmation pop-up, where player can choose to buy the Bonus feature.

All wins (except SCATTER) begin with leftmost column and pay left to right only on adjacent columns where symbols are on adjacent rows.

When a winning combination is achieved, all symbols in non-winning positions are removed except SCATTER symbols.
Remaining symbols drop to the bottom most position on their column.

If after Explosions there is more than one symbol type remaining (excluding SCATTER and PROFESSOR) then they are all transformed into the highest paying symbol of those present.

If after Explosions and Morphs any previously winning symbol is no longer in a winning position, extra matching symbols will be added to one or more surrounding columns to make it a winning symbol.

After Explosions, Morphs and Boosters, a new symbol will be dropped onto the top of each column that has less than 5 symbols present.
Any dropped symbol (except SCATTERS) that does not match or substitute for the current paying symbol is exploded.
Any dropped symbol that matches or substitutes for the current paying symbol, but does not drop into a paying position as it lands (prior to any latter column symbols being dropped) is exploded.
SCATTER symbols are always kept.
Any symbol that matches or substitutes for the current paying symbol and lands in a paying position, is kept.
If the total symbol win value is higher than that of the previous Drop (or base game prior to any Morphs/Boosters if this is the first drop) then an extra Drop is triggered.
New drops cannot be triggered if all columns contain 5 symbols.
Symbol wins are paid once no more Drops are triggered.

Bonus Respins are triggered when 5 or more SCATTER symbols appear.
Bonus Respins are triggered only after all base game Drops are complete.
All non-SCATTER symbols are exploded.
Remaining symbols drop to the bottom most position on their column.
3 respins are awarded.
A new symbol will be dropped onto the top of each column that has less than 5 symbols present.
Non-SCATTER symbols that are dropped are immediately removed.
SCATTER symbols are held.
When a new SCATTER symbol lands, respin count is reset to 3.
Upon completion of respins, each SCATTER symbol awards a prize or bonus prize.
Platinum bonus prize is 2000 x total bet.
Gold bonus prize is 250 x total bet.
Silver bonus prize is 50 x total bet.
Bronze bonus prize is 10 x total bet.
Non-bonus prizes range from 1 to 100 x total bet.
Bonus prizes are not progressive.
Bonus Respins are played at the bet of the triggering game.
Symbol pays shown in the paytable are not awarded during Bonus Respins.

The maximum win from the Gamble Feature is 10,000 x total bet.
If any combination of gamble options would result in a win higher than 10,000 x total bet they are disabled.
If a chosen combination of gamble options would result in a fractional win value (based on player currency), then the wager amount is reduced to one that would generate a whole win value.
You may choose to collect your winnings at any time.

Player selects a Total Bet size to play up to 707 adjacent ways.
Base Bet is equal to Total Bet pided by 20.
Payouts are made according to the paytable.
All wins are multiplied by total bet.
Non-bonus prizes displayed over SCATTER symbols have already been multiplied by total bet amount.
Highest win paid per winning combination.
Coinciding wins are added.
Only positions containing the winning symbol are used in determining the win for that symbol.
All wins (except SCATTER) begin with leftmost column and pay left to right only on adjacent columns where symbols are on adjacent rows.
Wins are calculated and paid only after all drops are completed.
PROFESSOR is Wild and substitutes for all symbols except SCATTER.
PROFESSOR does not appear on column 1 or 6.
Malfunction voids all pays and plays.

The Theoretical Return to Player is: 96.1%
The Theoretical Return to Player for the Buy Bonus is: 97.1%
The expected payback reflects the theoretical 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.

Pressing the Space bar will initiate Base Drop.
If your game is interrupted during play, you may replay the game round after restarting the game within 24 hour/hours after interruption. After that time, any winnings from an interrupted game will be added to your account. If you choose to skip the replay, your win will be added to your balance immediately.
In any situation where the replay functionality is not sufficient, please contact the support team of your gaming website.
In the event of malfunction of the gaming hardware/software, all affected games, bets and payouts are rendered void and all affected bets are refunded.

The symbols are dropped with a fair and equal chance for each symbol position by a certified random number generator. For more information
This is game rules version 3, dated October 17, 2022. To make available any previous version, please use the contact form at

Last modification date: 1/6/2023