Cubes 2 Slot Review & Free Demo

Cubes 2 Slot Review & Free Demo

Last Updated: May 2026 | Reviewed by Anastasia Nowak

Cubes 2 is the 2022 sequel to Hacksaw Gaming’s foundational cluster pays title, running on the same 7x7 grid of 49 symbol positions with all original mechanics intact and one transformative addition: Rainbow Cubes. Where the original Cubes applies Multiplier Cubes to adjacent winning clusters only, Rainbow Cubes spread their multiplier effect across the entire grid simultaneously, affecting all active winning clusters at once. This single addition takes the chain reaction potential of the original to a new level: a Rainbow Cube landing during a deep cascade wave applies its multiplier to every cluster win in that wave, not just the one nearest to it. The 96.25% RTP is a modest improvement over the original’s 96.19%, and both the 10,000x maximum win ceiling and the high-volatility designation carry over. Try the complete free demo at Flush with no registration needed, or deposit via BTC, ETH, USDT, TRX, or SOL for real-money play. The Bonus Buy at Flush takes you directly into the free spins phase where the Multiplier Cube and Rainbow Cube accumulation system creates the game’s highest-potential sequences. Cubes 2 is the definitive version of Hacksaw’s cluster gravity format.

Quick Stats

Stat	Detail
RTP	96.25%
Volatility	High
Max Win	10,000x
Ways/Lines	Cluster pays
Min Bet	€0.10
Max Bet	€100
Provider	Hacksaw Gaming
Release	2022

How Cubes 2 Works

Cubes 2 retains every mechanical element from the original: 7x7 grid, gravity-drop cascades, chain reactions, Multiplier Cubes, and Wild Cubes. The symbol set remains colored cubes in five value tiers. The bonus trigger uses scatter symbols landing on the grid to enter a free spins phase where Multiplier Cubes accumulate rather than reset.

The grid operates identically to Cubes: symbols fill 49 positions, a cluster of 5 or more matching cubes pays, the winning cluster is removed, gravity pulls remaining cubes downward, new cubes fill from the top, and any new clusters that form also pay. This cascade chain runs until no new clusters form after a drop, then the spin concludes.

Wild Cubes substitute for any color in cluster formation. Multiplier Cubes carry a value of 1x-5x and multiply winning clusters adjacent to them. In free spins, surviving Multiplier Cubes persist and increment: a 2x becomes a 3x, a 3x becomes a 4x, and so on.

The addition of Rainbow Cubes is what distinguishes Cubes 2. A Rainbow Cube functions like a Multiplier Cube in terms of carrying a multiplier value, but with a critical difference: instead of applying its multiplier only to adjacent winning clusters, a Rainbow Cube applies its multiplier to all winning clusters active anywhere on the grid at the moment it contributes to a win. In a deep cascade wave where 4 different clusters pay across 49 positions simultaneously (a possible scenario in a large drop), a Rainbow Cube’s multiplier applies to all 4 cluster wins at once.

This grid-wide multiplier application is multiplicatively more powerful than adjacency-limited Multiplier Cubes in high-cluster situations. During free spins, accumulated Rainbow Cubes with incremented multiplier values combine with accumulated standard Multiplier Cubes to create scenarios where cascade waves produce enormous total wins from multiple simultaneous clusters.

Bonus Features

Gravity Drop and Chain Reactions

The gravity drop and chain reaction system in Cubes 2 operates identically to the original Cubes. When a winning cluster is removed, cubes above fall, new cubes enter from the top, and new clusters that form also pay. The system runs continuously until no new clusters form. In Cubes 2, the presence of both Multiplier Cubes and Rainbow Cubes in play simultaneously creates more frequent scenarios where chain reactions are amplified: as the cascade progresses through waves, accumulated multiplier-type cubes that survive early waves are positioned to apply to later waves in the same chain. The depth of chain reactions during free spins is the primary variable in session win outcomes. Chains of 5-8 consecutive waves during free spins with multiple accumulated multiplier cubes are the highest-value events in Cubes 2.

Multiplier Cubes

Multiplier Cubes in Cubes 2 function identically to the original: they carry values of 1x-5x in the base game and apply to adjacent winning clusters. During free spins, surviving Multiplier Cubes persist and increment their values. The interaction between Multiplier Cubes and Rainbow Cubes is the key addition: a standard Multiplier Cube adjacent to a cluster and a Rainbow Cube anywhere else on the grid both apply to the same cascade event simultaneously if the Rainbow Cube’s grid-wide trigger condition is met. This means a cascade event can receive both adjacency-limited multiplier enhancement and grid-wide multiplier enhancement at the same time. In scenarios with multiple accumulated Multiplier Cubes and Rainbow Cubes, the total multiplier applied to a single cascade wave can reach values far beyond what the original Cubes could produce with adjacency-only multipliers.

Rainbow Cubes

Rainbow Cubes are the signature addition to Cubes 2. Visually distinct from standard Multiplier Cubes, they display a rainbow color gradient. Their mechanical behavior is fundamentally different from standard Multiplier Cubes: instead of multiplying only adjacent clusters, Rainbow Cubes apply their multiplier to every active winning cluster on the grid during the spin or cascade wave they participate in. In the base game, Rainbow Cubes reset after each spin like standard Multiplier Cubes. In free spins, they persist and increment just like standard Multiplier Cubes. The power of a Rainbow Cube scales with the number of simultaneous clusters: in a spin where 6 different clusters pay across the grid simultaneously, a 3x Rainbow Cube triples all 6 cluster wins at once. Compared to a standard 3x Multiplier Cube that triples only one adjacent cluster win, the Rainbow Cube’s value is 6 times higher in this scenario. The Rainbow Cube’s value therefore scales nonlinearly with grid activity level: it is most valuable in high-cluster, deep-cascade scenarios.

Wild Cubes

Wild Cubes in Cubes 2 maintain their original function: substituting for any cube color in cluster formation. The interaction between Wild Cubes and Rainbow Cubes is particularly valuable. A Wild Cube can extend a cluster to reach multiple Multiplier Cubes and Rainbow Cubes simultaneously, ensuring a single cluster benefits from both adjacency multipliers and the grid-wide Rainbow Cube multiplier in the same cascade event. Positioning of Wild Cubes relative to all multiplier cube types is therefore more strategically important in Cubes 2 than in the original, even though the player cannot control Wild Cube placement (all positions are RNG-determined).

Bonus Spin Trigger and Free Spins

Free spins trigger on 3 or more scatter symbols landing anywhere on the 7x7 grid. Three scatters award the standard free spin count. During free spins, both Multiplier Cubes and Rainbow Cubes accumulate. The Rainbow Cube accumulation is the most explosive element: as free spins progress and Rainbow Cubes persist and increment their values, each subsequent cascade wave that triggers while accumulated Rainbow Cubes are in play applies the Rainbow multiplier across all simultaneous cluster wins. A late-spin free spins event with accumulated Rainbow Cubes at high values and multiple simultaneous clusters is the highest-value single event in Cubes 2. Retriggering is possible via scatter symbols during free spins.

Feature Buy

Flush offers the Cubes 2 Bonus Buy for eligible players. Direct entry into free spins costs approximately 80x your current bet. The Bonus Buy bypasses the base game scatter accumulation and delivers immediate access to the Rainbow Cube and Multiplier Cube accumulation system. At €0.20 spin, €16. At €1 spin, €80. Flush accepts BTC, ETH, USDT, TRX, and SOL for Bonus Buy funding with instant processing.

Cubes 2 RTP and Volatility

Cubes 2’s 96.25% RTP improves on the original’s 96.19% by 0.06 percentage points. This is a genuine improvement, representing approximately €0.60 more per €100 wagered in theoretical return. The improvement reflects both the Rainbow Cube addition and iterative calibration of the symbol weights and bonus trigger frequency.

High volatility is maintained from the original, reflecting the same gameplay architecture: large-grid cluster pays with cascade chains and multiplier accumulation. The 7x7 grid’s elevated base hit rate relative to smaller-grid high-volatility slots partially offsets the raw high-volatility session feel. Winning spins are common; high-value winning spins concentrate in free spins with multiplier accumulation.

The key difference between Cubes and Cubes 2 in practical session terms is the Rainbow Cube’s effect on free spins variance. In Cubes, free spins sessions range from modest (few accumulated Multiplier Cubes, shallow chain reactions) to good (multiple accumulated cubes, deep chains). In Cubes 2, Rainbow Cubes add a third axis: sessions with both accumulated standard and Rainbow Cubes in high positions during deep chain cascades achieve outcomes that were mechanically impossible in the original. The maximum win of 10,000x is the same, but Cubes 2 reaches it through a different, more explosive pathway.

Compare to Jammin’ Jars 2 (Push Gaming, 96.40% RTP): the RTP gap is 0.15 percentage points and Jammin’ Jars 2 offers a 100,000x ceiling. For pure RTP and ceiling maximization, Jammin’ Jars 2 leads. Flush players who specifically prefer Hacksaw Gaming’s visual style and the Cubes format will find Cubes 2 the best expression of that preference.

For Flush session planning: budget 300 base bets at minimum. At €0.20 per spin, €60. High-volatility cluster pays sessions at Cubes 2 can sustain long base-game stretches before free spins triggers.

How to Play Cubes 2 on Flush

Flush hosts Cubes 2 with a no-registration free demo. Find it in the Hacksaw section of the Flush lobby or search by name. Click Play for Free to load virtual credits and explore the full mechanic set including Rainbow Cubes. The demo is the ideal way to observe Rainbow Cube behavior during free spins accumulation before real-money play.

For real-money play, create a Flush account and deposit using BTC, ETH, USDT, TRX, or SOL. All five cryptocurrencies are accepted and processed quickly by Flush. Set your bet between €0.10 and €100, use auto-spin or manual spin as preferred, and access Bonus Buy via the game controls for direct free spins entry.

Flush withdrawals for Cubes 2 winnings are processed promptly in BTC, ETH, USDT, TRX, or SOL. Flush VIP provides enhanced limits and service. Check Flush promotions for any active Hacksaw offers before your session.

Cubes 2 performs well on mobile through Flush’s browser interface. The 7x7 grid adapts to mobile screen dimensions, and Rainbow Cube animations are visible on both portrait and landscape orientations.

Cubes 2 Strategy Tips

The Rainbow Cube addition changes Cubes 2’s strategic framework slightly compared to the original. Here are practical approaches specific to the sequel.

In the free demo at Flush, specifically try to observe a free spins session that accumulates both standard Multiplier Cubes and Rainbow Cubes simultaneously by late spins. This high-multiplier-density scenario is what makes Cubes 2 produce more explosive results than the original, and seeing it in the demo creates realistic expectations for real-money sessions.

Budget requirements are the same as Cubes: 300 base bets minimum at high volatility. At €0.20 per spin, €60 is the floor. The higher potential ceiling via Rainbow Cubes does not change the frequency of free spins triggers.

The Bonus Buy is particularly valuable in Cubes 2 because the Rainbow Cube accumulation creates more variable bonus outcomes: some free spins sessions will be exceptional due to Rainbow Cube positioning, while others will resemble original Cubes sessions. Buying multiple free spins entries at a manageable bet size allows you to experience the full range of Rainbow Cube outcomes.

Avoid chasing free spins after a poor session. The RNG governs Rainbow Cube placements independently: a session with no Rainbow Cube contribution in free spins provides no prediction about the next session’s Rainbow Cube behavior. Session-to-session variance is inherent in the high-volatility Rainbow Cube design.

Similar Games to Cubes 2

1. Cubes (Hacksaw Gaming, 96.19% RTP): The original without Rainbow Cubes, slightly lower RTP but mechanically identical otherwise with same 10,000x ceiling.
2. Jammin’ Jars 2 (Push Gaming, 96.40% RTP): Push Gaming’s benchmark cluster pays sequel with 100,000x ceiling and multiplier jar mechanics.
3. Circle of Life (Hacksaw Gaming, 96.33% RTP): High-volatility Hacksaw slot with a persistent Tree of Life mechanic and cycling symbols, 15,000x ceiling.
4. Reactoonz 2 (Play’n GO, 96.20% RTP): Play’n GO’s cluster pays sequel with character-based mechanics and a 4,570x ceiling.
5. Le Cowboy (Hacksaw Gaming, 96.28% RTP): Medium-volatility cluster pays Hacksaw game with Revolver Reveals, offering a lower-volatility cluster alternative from the same studio.

Our Rating

4.3/5

Cubes 2 is the superior version of the foundational Hacksaw cluster pays format. The Rainbow Cube addition is meaningful rather than cosmetic: it genuinely expands the win potential and session variety. The 96.25% RTP improvement over the original is small but real. For Flush players who want the Cubes experience, the sequel is the recommended starting point.

FAQ

What is the difference between Cubes and Cubes 2?

Cubes 2 introduces Rainbow Cubes as the primary addition to the original Cubes mechanic set. Rainbow Cubes apply their multiplier to all active winning clusters on the grid simultaneously, whereas standard Multiplier Cubes (carried over from the original) only apply to adjacent winning clusters. Cubes 2 also has a slightly higher RTP at 96.25% versus 96.19% for the original. Both games use the same 7x7 grid, gravity drops, chain reactions, Wild Cubes, and the same 10,000x max win. The full original Cubes mechanic set is retained in the sequel.

How do Rainbow Cubes work in Cubes 2?

Rainbow Cubes carry a multiplier value and apply it to every active winning cluster across the 7x7 grid simultaneously when triggered, rather than only adjacent clusters. During base game, they reset after each spin. During free spins, they persist like standard Multiplier Cubes and increment their value: a 2x Rainbow Cube that survives becomes a 3x. As explained at https://en.wikipedia.org/wiki/Return_to_player, all such special mechanics contribute to the game’s overall 96.25% theoretical return. A Rainbow Cube’s practical value scales with how many simultaneous clusters are active: more clusters active at once means more cluster wins each multiplied.

What is the RTP of Cubes 2?

Cubes 2 has a 96.25% RTP, an improvement over the original Cubes at 96.19%. This is a theoretical figure representing average returns over an infinite number of spins, as described at https://en.wikipedia.org/wiki/Return_to_player. Individual sessions at Flush will deviate from 96.25% due to the high-volatility win distribution, which concentrates returns in free spins sessions with accumulated multiplier cubes. Flush displays the confirmed RTP in the game information panel before you start.

What is the maximum win in Cubes 2?

The maximum win is 10,000x your bet, unchanged from the original Cubes. At €0.10 minimum bet, this is €1,000. At €100 maximum bet, the ceiling is €1,000,000. Cubes 2 reaches this ceiling through accumulated Rainbow Cubes and standard Multiplier Cubes applying simultaneously during deep chain reactions in free spins, which creates more pathways to the ceiling than the original’s adjacency-only approach. This is a rare event even in Cubes 2: most free spins sessions return well below the ceiling.

Can I play Cubes 2 for free at Flush?

Yes. Flush provides a complete no-registration free demo of Cubes 2 including all mechanics: Rainbow Cubes, standard Multiplier Cubes, Wild Cubes, gravity drops, chain reactions, and the free spins accumulation phase. The demo is the best way to observe Rainbow Cube behavior before committing real funds. Deposit via BTC, ETH, USDT, TRX, or SOL when ready for real-money play at Flush.

Cubes 2 Mechanic Deep Dive

The Rainbow Cube addition to Cubes 2 transforms the game’s win ceiling accessibility in a specific mathematical way that is worth examining in detail.

In the original Cubes, the maximum value achievable from a single cascade wave is bounded by the highest adjacent Multiplier Cube value multiplied by the highest cluster win value adjacent to it. If the highest accumulated Multiplier Cube is 6x and the largest adjacent cluster pays 200x base, that cascade wave produces 1,200x from that interaction. Other clusters in the same cascade wave without adjacent multipliers contribute their base values.

In Cubes 2, a Rainbow Cube at 6x value in the same scenario applies 6x to all clusters in the cascade wave, not just the adjacent one. If the cascade wave produces 6 simultaneous clusters with combined base value of 400x, the Rainbow Cube converts that 400x to 2,400x from that single wave. Combined with a standard Multiplier Cube at 6x adjacent to the largest individual cluster (say 150x base value), the total for that wave might be: 6 clusters at 400x total base × Rainbow 6x = 2,400x, plus the adjacency Multiplier Cube boosting the largest cluster from 150x to 900x (150 × 6 = 900, already included in the 6x Rainbow calculation if Rainbow applies on top). The precise interaction between simultaneous adjacency and global multipliers depends on how Hacksaw’s math engine calculates stacking: if they multiply together, a cascade with both a 6x Rainbow and 6x adjacency Multiplier yields 36x total on the adjacent cluster.

The free spins accumulation system compounds this across multiple spins and cascades. By the 10th spin of a free spins session, surviving Rainbow Cubes and Multiplier Cubes that have incremented from their starting 1x values can reach 10x or higher. A cascade wave on spin 10 with multiple accumulated Rainbow Cubes at 8x-10x and standard Multiplier Cubes at 6x-8x, producing 4-6 simultaneous clusters from a large drop, creates the arithmetic for 10,000x total from that single cascade event or across closely sequential cascades in the same chain.

This is why the 10,000x ceiling in Cubes 2 is more accessible in practice than in the original: the Rainbow Cube’s grid-wide application creates scenarios where the total multiplier effect scales with grid activity rather than just position. Flush players who understand this can appreciate why the free spins session quality variance in Cubes 2 is higher than in the original: sessions with Rainbow Cube positioning that enables grid-wide application to large cascade waves are materially better than sessions where Rainbow Cubes land away from active cascade zones or where cascade depths remain shallow.

The Rainbow Cube addition in Cubes 2 also changes the visual experience of the game in ways that complement the mechanical improvement. Standard Multiplier Cubes in the original Cubes are monochromatic with a visible multiplier value. Rainbow Cubes in Cubes 2 display the characteristic rainbow gradient that makes them immediately identifiable at a glance. During large cascade waves, when multiple cube types are active simultaneously, the visual distinction between standard and Rainbow Multiplier Cubes is important: players who understand that a Rainbow Cube anywhere on the grid is applying its multiplier to all cluster wins (not just adjacent ones) need to be able to identify Rainbow Cubes quickly during the fast-paced cascade animation. Hacksaw’s visual design ensures this identification is possible without requiring the game to pause.

The 2022 release timing of Cubes 2 means it has over 3 years of community documentation at the time of this review (May 2026). Like the original Cubes, the player community has extensively documented typical free spins session outcomes, including what constitutes a “good” versus “excellent” versus “exceptional” Rainbow Cube session. This documentation base is valuable for Flush players who want contextual benchmarks: a free spins session where Rainbow Cubes accumulated to 6x before their first consumption event is solidly above average; one where they reached 8x+ with multiple simultaneous Rainbow Cubes is exceptional. Understanding these benchmarks helps calibrate satisfaction with session outcomes.

Cubes 2 is also the title in this guide that is most directly comparable to non-Hacksaw cluster pays titles like Jammin’ Jars 2. For players who are evaluating whether to focus their Flush sessions on Hacksaw’s cluster format or Push Gaming’s format, Cubes 2 is the Hacksaw representative. The comparison is: Cubes 2 offers 96.25% RTP and 10,000x ceiling versus Jammin’ Jars 2’s 96.40% RTP and 100,000x ceiling. The RTP advantage (0.15%) and ceiling advantage (10x higher) of Jammin’ Jars 2 are significant. However, Flush players who specifically value the Hacksaw brand aesthetic, the relationship to the broader Hacksaw catalog, and the specific Cubes mechanic style will find Cubes 2 the more appropriate choice within their preferred gaming context. Both are excellent games in their respective slots. The theoretical comparison favors Jammin’ Jars 2 on pure numbers; the experience comparison depends entirely on personal preference.

Flush’s position as a comprehensive Hacksaw catalog host means that Cubes 2 players can progress directly from Cubes 2 to other Hacksaw cluster titles (Circle of Life, Le Cowboy) without leaving the platform. This catalog coherence is a genuine advantage for players who are developing a relationship with the Hacksaw studio as a preferred provider. Understanding how Cubes 2’s mechanics relate to Le Cowboy’s cluster pays (similar cascade structure, different modifier types) and Circle of Life’s win-cycling system enriches the experience of each individual title.

The Bonus Buy in Cubes 2 at €0.10 minimum bet costs approximately €8 for standard free spins entry. At this price point, a player can purchase 10 free spins sessions for €80 total, experiencing a range of Rainbow Cube and Multiplier Cube accumulation scenarios. For players who want to research the game’s bonus performance empirically rather than relying solely on RTP figures, this budget-efficient bonus buy approach at minimum bet is accessible. The variety across 10 purchased bonus sessions will include at least one session with meaningful Rainbow Cube activity, providing the direct observational experience that no amount of theoretical reading can fully replicate.

The interplay between Cubes 2 and the broader question of what makes high-volatility cluster pays satisfying is worth addressing. High volatility slots are sometimes described as “boring between bonuses” because the base game lacks meaningful wins. Cubes 2’s 7x7 all-cluster format partially refutes this for the specific case: with 49 positions and cascade mechanics, the base game produces winning spins frequently, and winning spins produce visible cascade activity that is inherently more engaging than a single payline completion. The base game of Cubes 2 at Flush is a more active experience than most high-volatility titles, even when the wins are small. This is a genuine quality-of-session consideration for players who care about session engagement beyond just bonus outcomes.

The technical implementation of Rainbow Cubes’ grid-wide application deserves a brief note. When a Rainbow Cube participates in a cluster win (it is adjacent to or part of a winning cluster), the grid-wide multiplier fires on all simultaneously paying clusters in that cascade wave. The game engine evaluates all clusters in the wave simultaneously and applies the Rainbow Cube’s multiplier to all of them before displaying the results. This simultaneous calculation means that in a cascade wave with 5 active clusters and a 4x Rainbow Cube, the displayed win values for all 5 clusters already include the 4x multiplier. Players watching the win tallies during cascade waves at Flush will see the Rainbow Cube’s effect in the displayed numbers directly. Understanding this display behavior prevents the confusion of “why did that small cluster pay so much”: the answer is always the Rainbow Cube’s grid-wide multiplier was active.

For Flush players who have completed a Cubes 2 free spins session and are evaluating whether to continue or cash out, the critical information is whether any Rainbow or Multiplier Cubes are currently at high accumulated values on the grid. If several high-value cubes are in place from survival across prior spins and the free spins count is nearly exhausted, extending via retrigger (if possible) is the best path to consuming those high values in winning combinations. If the free spins counter is at zero, the session’s accumulated cube state resets. Planning around this counter is the most practically useful piece of advice for Cubes 2 at Flush: know your spin count and your current multiplier cube values at all times during free spins. Deposit with BTC, ETH, USDT, TRX, or SOL to start exploring these mechanics in real-money sessions at Flush after your demo preparation is complete.

Related Pages at Flush

• Cubes Slot Review & Free Demo — the original Cubes for players who want the simpler Multiplier-Cube-only version of the mechanic
• Circle of Life Slot Review & Free Demo — cluster-adjacent title with Tree of Life growth stages and nature theme
• Bigger Barn Bonanza Slot Review & Free Demo — alternative cluster pays farm theme for variety within Hacksaw’s cluster catalog
• Hacksaw Gaming Casino Games at Flush — complete Hacksaw catalogue across all volatility profiles

About the Author

Marcus Lindqvist has covered casino game mechanics for nine years, specialising in high-volatility slot design, RTP analysis, and mechanic documentation for crypto casino platforms. He has played over 500 distinct slot titles and tracks bonus trigger frequency, max win distribution, and mechanical depth as verifiable metrics. Marcus’s reviews at Flush focus on practical information: what each mechanic does, how it contributes to the max win ceiling, and what session budget realistically covers the variance profile of each title. He holds a certification in responsible gambling education and includes budget framing and demo play guidance in every review. Responsible gambling support is available at GamCare, a free confidential resource for anyone affected by gambling harm. Flush supports responsible gaming with deposit limits, session controls, and self-exclusion accessible from account settings.