Older edition — looking for another slot?
This review documents a historical game edition. The archived rules and screenshots do not confirm current availability.
Explore Microgaming gamesPower Spins: Nuclear 9s is Microgaming’s historical five-reel, nine-payline slot with an optional Rolling Reels mode. The original desktop captures below show the base game, a feature in progress, its instructions and part of the paytable. This review applies to that edition; it does not establish current casino availability.
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Reading the bet controls
The base screen shows nine lines, five coins per line and a 45-coin bet. Its 0.05 denomination makes that stake 2.25 in the displayed monetary unit. No currency symbol is visible, so the example should not automatically be labelled dollars or euros. Bars, coloured nines, bells, cherries, a Nuclear symbol and a separately labelled scatter appear on the reels.
Verified paytable entries
The pictured paytable explicitly says that ordinary wins are multiplied by coins bet per line. Its scatter exception uses the total bet instead. Only the highest win is paid per line; ordinary wins run left to right, while the scatter pays anywhere. The four visible groups are transcribed below. These are line-bet multipliers, not multiples of the total spin stake.
| Symbol group | Three | Four | Five |
|---|---|---|---|
| Any nines | 50 | 75 | 1,000 |
| Any bars | 25 | 50 | 150 |
| Bells | 25 | 75 | 200 |
| Cherries | 25 | 75 | 200 |
A line-win example with the correct units
At the pictured five coins per line, three cherries on a qualifying line would pay 25 × 5 = 125 coins. At denomination 0.05, that is 6.25 units. With the pictured 45-coin base stake and no other wins, the net result would be 125 − 45 = 80 coins, or 4.00 units. This is a worked example from the original table, not a claim that the base screenshot is a winning spin. Multiplying by all nine lines again would overstate the award.
How Rolling Reels works
During Power Spins, winning symbols dissolve and the affected reels roll down, potentially creating another win. The instructions say the initial win uses a 1x multiplier and subsequent wins on that spin all use 2x. They do not describe a ladder increasing to 3x, 4x and beyond. When no consecutive win is triggered, the multiplier resets to 1x.
Using the cherry example above, a qualifying subsequent Rolling Reels win would be 25 × 5 × 2 = 250 coins, or 12.50 units at denomination 0.05. That is the award for that win, not necessarily the complete spin return. A net calculation must also include the full Power-mode stake and all awards in the sequence.
What these screens do not establish
The paytable capture covers four symbol groups, not every symbol or scatter-count award. The in-progress feature screen does not clearly display its total stake, so it cannot verify the extra Power-mode charge or a final net result. A 225-coin counter at denomination 0.05 converts to 11.25 units, but an intermediate counter should not be presented as the final feature payout.
The captures do not establish universal stake limits, a maximum win, a certified RTP or current availability. Check the complete help in the release you can actually access before using figures from another version.
Nuclear 9s questions
Which edition is reviewed?
The historical Microgaming desktop edition with five reels, three rows and nine paylines shown in the original captures.
Are the listed awards multiples of the whole bet?
No. The pictured ordinary-symbol awards multiply the coins bet per line. The printed rule identifies scatter awards as the total-bet exception.
Do Rolling Reels multipliers keep increasing?
No. The displayed instructions give initial wins 1x and all subsequent wins on that spin 2x.
Does the scatter need to be on a payline?
The original paytable says the scatter pays anywhere. Its numerical awards are not visible on this captured page.
What does a three-cherry win pay at five coins per line?
It pays 125 coins before any Rolling Reels multiplier: 25 times five. At denomination 0.05, that is 6.25 units.
Is Rolling Reels a separate set of free spins?
The instructions describe winning symbols dissolving and reels rolling down within the Power Spin. They do not describe a free-spin counter or a separate awarded batch of spins.
Evidence: four original game screenshots preserved by LCB’s Nuclear 9s gallery, visually inspected on 12 October 2026. The captured game instructions and paytable are the basis for the calculations above.
