Clover Vault: Progressive JP
demo and specs

Mancala Gaming released Clover Vault: Progressive JP on 15 September 2026. It is a 5-reel slot built on a clover-and-vault theme, pairing the familiar luck-of-the-clover imagery with a vault that houses a live progressive jackpot as the top prize. The core numbers are a 95.00% RTP, high volatility, and a maximum win of 50,000x stake.

The progressive jackpot structure places the game in a specific and widely played category: the top prize grows with every wager placed across the network, rather than sitting at a fixed value from the start. High volatility is the natural companion to that design. Most spins and most sessions will run cold, and the real weight of the game rests in the jackpot trigger.

The game is aimed at players who are comfortable with long dry spells in exchange for a live, growing top prize. A session bankroll that is deep relative to the chosen stake is not optional at this volatility grade. Short-session or budget players will find the maths working against them faster than on a medium-variance release.

Mancala Gaming has published the RTP, volatility grade, max-win multiplier, grid dimensions, and stake range. The payline count, hit rate, and full detail of any secondary bonus mechanics have not been published. This page is updated when the studio releases those specifications.

A **50,000x** ceiling means £10,000 from a 20p spin and £5,000,000 at the top stake.

The RTP is 95.00%. The rough benchmark for UK-facing releases sits near 96%, so Clover Vault: Progressive JP runs a full percentage point below that mark. Over a long session the model returns £95.00 per £100 wagered, compared with £96.00 at the field average.

That gap compounds with volume. Spin through £1,000 in total bets and the model expects roughly £950 returned, not £960. For regular players or anyone wagering at higher stakes, the shortfall becomes meaningful across a run of sessions.

Part of that RTP budget is allocated to the progressive jackpot pool. Progressive jackpot games typically reserve a slice of every wager to grow the live prize, which is one structural reason the headline RTP sits below the UK average. The published 95.00% is the full return figure inclusive of jackpot hits across the statistical distribution.

In an ordinary session that does not trigger the jackpot, the effective base-game return will tend to fall below 95%. That is not a flaw in the publishing; it is the structural reality of the progressive format. The jackpot contribution is real, but it is rare, and most sessions do not capture it.

High volatility sharpens the session picture further. The RTP is a long-run average reached through a distribution weighted toward infrequent, large wins rather than steady small returns. Many consecutive spins will return nothing, and the gap between feature hits can stretch over hundreds of rounds.

A working session bankroll of 150 to 200 spins at the chosen stake gives the game room to play out its variance without running dry. At £0.20 per spin that is a £30 to £40 cushion; at £1.00 per spin it is £150 to £200.

The max win is 50,000x stake. At the minimum bet of £0.20 that ceiling is worth £10,000. At the maximum bet of £100.00 it rises to £5,000,000.

At mid-range stakes the ceiling scales proportionally: £1.00 per spin gives a £50,000 cap, and £10.00 per spin gives £500,000. The live jackpot at any given moment may produce a cash payout above or below those figures depending on network accumulation, but 50,000x is the hard limit regardless.

Mancala Gaming has not published a hit rate for Clover Vault: Progressive JP. Without that figure the high-volatility grade is the clearest available guide: wins land less often than on medium or low-variance releases. Short-session results are a poor basis for any judgement about long-run performance; the RTP resolves statistically over millions of spins.

The published feature information for Clover Vault: Progressive JP centres on the progressive jackpot mechanic that names the game; here is what the studio has confirmed:

• Progressive jackpot: the top prize sits in a live network pool that grows as players wager, then pays the accumulated pot to the player who triggers it. As a mechanic class, progressive jackpots either trigger at random during a base spin, via a dedicated bonus round, or through a special qualifying feature; in a multi-tier system, smaller jackpots sit below the top prize and land more frequently than the headline pot. The specific trigger mechanic, any tier structure, and the seeded starting value for Clover Vault: Progressive JP have not been published by Mancala Gaming.
• 5-reel base game: symbols land across five reels and wins form along fixed paylines; the base game provides the ongoing route to the jackpot trigger between feature activations. The payline count for this title has not been confirmed in the published spec.

Beyond the progressive jackpot, Mancala Gaming has not published the tier count, trigger conditions, the mechanics of any secondary bonus rounds, or a spin count for any free-spins feature. This page is updated as those specifications are released. No feature-buy option appears in the currently published spec for this title; if one is added in a future update, it will be unavailable to GB players at UKGC-licensed casinos, where the Commission prohibits bonus-buy mechanics for players in Great Britain.

The base game runs on a 5-reel grid. Between feature triggers, each spin settles the reels and pays any wins along the active paylines. The payline count has not been published, so the exact number of win lines is not confirmed at this time.

High volatility means base-game wins are infrequent. The stretches between features are where most of a session is spent, and that experience is typically lean. The base game is essentially bankroll management until the jackpot mechanic engages.

The stake range runs from £0.20 to £100.00. At the minimum, a £20 deposit covers 100 spins before it is gone, which is a thin margin for a high-volatility title. At £1.00 per spin a budget of £150 to £200 gives 150 to 200 spins, a more sensible working cushion at this variance grade.

The top end at £100.00 per spin puts the £5,000,000 ceiling within reach, but a session budget at that level needs to be measured in hundreds of pounds to withstand the cold runs that high volatility brings. Mid-range stakes from £1.00 to £10.00 offer the most practical balance of ceiling ambition and session sustainability.

Mobile play is built in as standard. The game scales to phone and tablet screens without a separate build. UK rules apply identically on mobile: stake limits, responsible-gambling tools, session alerts, and the UKGC's auto-play restrictions all function on a phone exactly as they do on desktop.

Within the progressive jackpot category, Clover Vault: Progressive JP positions at the high-variance end. A 50,000x ceiling is a competitive figure that sits toward the upper end of what the progressive jackpot field broadly offers.

The trade that ceiling buys is a lower hit frequency and an RTP a percentage point below the UK norm. That is the structural progressive jackpot bargain: a portion of every wager feeds the live pool rather than the base-game return, which depresses the headline RTP while building the top prize.

Compared with fixed-max-win high-volatility slots, the ceiling here is not static. The live jackpot at the moment a player opens the game may be considerably larger than its seed value, depending on how long since the last hit and how heavily the network has been played. That variability is the appeal of the progressive format over a fixed top win.

The jackpot can also reset immediately after a trigger, leaving the pool at its minimum. Players who sit down just after a payout will be playing against a smaller pool than those who arrive mid-accumulation. The timing element is inherent to the progressive model, not specific to this title.

Against other progressive jackpot titles at a similar volatility grade, Mancala Gaming's 95.00% RTP is on the lower side of what the market offers. Players comparing options on return percentage alone will find steadier alternatives. The case for Clover Vault: Progressive JP is the ceiling and the live jackpot mechanic, not the headline RTP figure.

This game has a specific fit; here is who it suits:

• Progressive jackpot hunters who accept a sub-96% RTP and extended cold runs in exchange for a live, growing top prize that can land at any spin.
• High-stakes players with a deep session budget; the £5,000,000 ceiling at £100.00 per spin is only reachable if the bankroll can hold through the high-volatility dry spells that precede it.
• Players drawn to the clover-and-vault theme who want a clean 5-reel layout with the jackpot as the primary mechanic, rather than a layered multi-feature bonus structure.

Who should skip it: players on a tight budget or with a short session window are poorly matched here. A 95.00% RTP and high volatility mean the bankroll erodes quickly between wins, and the jackpot trigger may not arrive before the deposit runs out. Players who prefer frequent small wins, a fully detailed feature set with a published hit rate, or an RTP closer to the UK average will find better-suited options in the comparison table below.