Nuclear Tumble FAQ: the complete guide

Relax Gaming developed it in collaboration with CasinoGrounds. Both the provider's game page and its release announcement identify the partnership.

The published launch date is 29 October 2026. It was already released at the time of this review's 12 November 2026 source check.

There are six reels and six rows, with 46,656 advertised ways. Stone blocks occupy part of the board during the clearing sequence.

No. The cash symbol must reach the bottom row before its value is collected. Its appearance higher in the grid is only an intermediate state.

The 6×6 format is a useful anchor when the screen becomes busy. Its advertised 46,656 ways describes the reel structure, not separate wagers or a promise of frequent wins. Cascades keep the sequence developing as gaps refill, changing the arrangement after the initial result.

Up to 25 stone blocks can appear before a spin. Wins destroy touching blocks, and some conceal additional symbols. An opening can therefore change where later symbols fall and reveal another event. The published explanation also identifies bombs among those concealed objects.

Cash symbols are distinct from ordinary matching symbols. Their displayed value becomes a collected prize only at the bottom row. That positional condition explains why cash can remain unresolved while a cascade develops. Its location matters to understanding the animation as much as the value printed on it.

When the final stone block is removed, Meltdown clears every non-cash symbol and supplies a fresh grid. Cash symbols are retained, and the replacement drop has an increased chance of additional and higher cash values. It is a change in the state of the game, not an automatic award of the maximum prize; the new arrangement still has to resolve.

During Free Spins, every four collected cash symbols award an additional spin and increase cash values. The mechanism links extension and progression to the same collection count. It also makes the initial six, eight or ten spins starting allocations rather than fixed final lengths. Values visible on the grid and values already collected should not be treated as the same thing.

Golden modes remove lower cash prizes from the available selection and use different prices. CasinoGrounds lists Golden Spins at 15× the base bet, Golden Meltdown at 175×, and Golden Free Spins at 400×, 750× or 1,500× for the three tiers. These are distinct paid configurations with a shared 5,000× cap; a higher entry price does not turn that cap into a larger one.

Three scatters with the green, standard outcome. The standard round starts with six spins. Every four collected cash symbols add a spin and raise cash values. The opening count describes the beginning of the feature, not a guaranteed payout or its fixed final length.

The qualifying scatter set includes yellow and no overriding red. Super begins with eight spins. It is a tier of the same feature family rather than a separate matching game. The additional starting spins and the continuing collection system are the verified distinctions when comparing it with the standard round.

The qualifying scatter set includes red. Ultra begins with ten spins and takes priority if yellow is also present. It still operates within the stated maximum. The longer starting allocation changes the opening state, while the eventual sequence and payout remain variable.

CasinoGrounds, the game's development partner, publishes 96.10% RTP for the default game. It separately lists 96.10% for Golden Spins and 96.50% for the purchases discussed in its Golden-mode section. These figures describe configurations over a very large number of outcomes; they are not percentages that a particular session must return.

The same primary source describes volatility as medium, at six out of ten, and gives a maximum win of 5,000× the base bet. Volatility, theoretical return and the maximum answer different questions. None states how long a particular balance will last, and the maximum should not be read as a typical feature result.

Relax Gaming lists alternative game identifiers for several configurations. Consequently, a review's default RTP cannot establish the setting delivered by every operator. The specific game's information panel remains the place to identify that version. Mode prices are also multiples of the base bet, which should be distinguished from the amount paid to enter a purchased feature.

Removing all stone blocks triggers it. Non-cash symbols disappear, existing cash symbols remain, and a fresh grid arrives with enhanced cash-symbol potential.

Three scatters trigger the feature. Green gives six initial spins, yellow raises the tier to eight, and red gives ten with priority over yellow.

Yes. Every four collected cash symbols add a spin and increase cash values. The extension depends on collected symbols, not merely visible ones.

No universal claim is justified. It is the published default figure; the provider lists other configurations, and the coproducer gives separate figures for certain modes.

A cascade in which symbols drop into spaces created during the current sequence.

An obstacle that can break beside a win and may conceal a special symbol.

A displayed prize value collected only after the symbol reaches the bottom row.

The board-refresh feature activated by removing every stone block, while retaining cash symbols.

The menu containing alternative modes, including the separately priced Golden configurations.