Clover Vault: Progressive JP

Clover Vault: Progressive JP Slot Review

A red-bearded leprechaun in a green top hat leans in from the left of the reels, cradling an overflowing pot of coins and holding a single gold piece out towards the frame. Coins spill in a heap behind him beneath the Clover Vault sign, and gold Celtic knotwork binds the corners of the wooden reel frame. For all that storybook charm, the game underneath is closer to a cash-collector than a five-by-three: Mancala Gaming have built a 5×3 grid with no win lines at all, where nothing pays until something arrives to collect it.

That’s a bolder choice than the artwork lets on. Clover Vault: Progressive JP pays entirely through collection symbols, carries four jackpots with the Major and Grand pots progressive, and gives the base game almost nothing to do except stack coins and wait. The payoff is a bonus round that can snowball across all fifteen positions, and in my view the wait is what this game is actually selling.

Base Game & Features

The 5×3 grid carries fifteen positions and no win lines. Wins don’t arrive as matched symbols across a line; they arrive through the collection symbols described below, which can appear in any position. No RTP figure is published for this one.

Coins are the currency of the base game. Each one lands with a value attached and does nothing on its own; the value only pays when a collection symbol takes it. That single design choice shapes every spin, because a board full of coins is worthless until something comes to collect them.

Claim Win

The Claim Win symbol can appear in any position. It gathers the values from its position until its counter reaches zero, at which point a percentage of the collected value is paid out. It awards 3-5 Re-spins, all performed on a single spin state.

The payout percentage is drawn from a fixed ladder:

• 10% of the total collected prize
• 20% of the total collected prize
• 30% of the total collected prize
• 40% of the total collected prize
• 50% of the total collected prize
• 100% of the total collected prize
• 200% of the total collected prize

Seven rungs, and the top two are the only ones that return more than was gathered. The 200% rung is the one that turns a modest board into something worth the wait, and there’s no way to aim at it: the percentage is drawn, not chosen.

The paying symbols are few, and their values sit in a single band:

• Coin, Mini and Minor symbols: 20.00 to 200.00

Surprise and Jackpot Surprise Symbols

Both symbols can appear in any position during base and bonus play. In base play, neither transforms; they land and wait. Surprise symbols come into their own in the bonus game, where they can turn into a Coin, a Collector symbol, or Mini and Minor Jackpot symbols. Jackpot Surprise symbols transform into Mini, Minor and Major Jackpot symbols in the bonus game only.

Jackpot Symbols

The Mini, Minor and Major Jackpot symbols show up on the base grid as well as in the bonus round. In base play, only the Mini and Minor Jackpot symbols pay out, and only if they appear within the Claim Win sector. Every jackpot becomes winnable in the bonus game.

Base play, then, is a holding pattern. Coins land with their values attached, the two Surprise symbols land and do nothing, and the middle row is the only thing worth watching, because five symbols there open the vault.

Clover Vault: Progressive JP Bonus Game & Progressive Jackpots

The bonus game triggers on any five symbols on the middle row. At the start, 3 respins are granted, and every time a new symbol lands the respin count resets to 3. The round ends when the respins run out or the grid fills. Each new symbol that lands locks in place on the grid, which fills progressively towards all fifteen spots.

It plays out one landing at a time. A symbol sticks, the counter returns to three, and the next respin decides whether the grid grows or the round dies. Because coins, jackpots and both Surprise variants all count as symbols for the fill, a single round can snowball from a half-empty board to a full one without ever feeling decided.

Collector Symbol

In the bonus game, the Collector symbol takes every coin value on the board, Jackpot symbols excepted, and multiplies them once by a random factor between x1 and x20. It does this without removing any symbols from the grid, so the coins stay put for the rest of the round.

That “once” matters. A single Collector can’t re-trigger itself, but a second one landing later applies its own multiplier to whatever the coins are worth by then, which includes any boost the first one left behind. Two collectors in one round is where the coin values stop being modest.

Multiplier Symbol

The Multiplier symbol appears only in the bonus game. It doubles the values on coin symbols and disappears after use. It cannot trigger the Grand Jackpot.

Progressive Jackpots

In the bonus game, all jackpot symbols can be won, and more than one jackpot of each type can be taken in a single round, with one exception: the Grand Jackpot can only be won once. The Major and Grand Jackpots are progressive, with every bet contributing to the pots, while the Mini and Minor Jackpots carry fixed values.

The Grand Jackpot is its own event. Filling all 15 spots of the grid with symbols of any type grants it, and forfeits every other prize on the board. No maximum win figure is published for this game.

Our Honest Verdict

Overall Rating: 7.1/10

Playing Clover Vault feels like watching a pot fill while a leprechaun holds the lid. Spin after spin, coins stack up and do nothing, and the one reason to choose it over any lined-up five-by-three is that build: knowing every coin on the board could be swept into a single round where the counter keeps resetting.

The bonus game earns the wait. Because coins stay on the grid when the Collector multiplies them, a good round compounds rather than pays once, and a nearly full board is genuinely tense. The base game is the weakness, and it’s a real one: the Surprise symbols sit there inert, and Claim Win hands back a slice of what it gathered more often than the lot.

This is one for players who like a slow build and a jackpot chase over regular small wins. Anyone who wants symbol pays landing every few spins won’t find them here, and no leprechaun can change that. But for those happy to wait while the vault fills, there’s a handsome pot at the end.

Clover Vault: Progressive JP FAQs

• How is the bonus game triggered in Clover Vault: Progressive JP?

  Five symbols anywhere on the middle row start the round. Three respins come with it, and each new symbol that lands returns the count to three until the board fills or the respins run dry.
• What does the Claim Win symbol do?

  It gathers coin values over 3-5 Re-spins played on a single spin state, then pays a slice of the total when its counter runs out. The slice is drawn from a ladder running from 10% up to 200% of everything it collected.
• How do you win the Grand Jackpot in Clover Vault: Progressive JP?

  Fill all 15 spots of the game grid with symbols of any type during the bonus game and the Grand Jackpot is yours. Every other prize on the board is forfeited when it lands.
• What does the Collector symbol do in the bonus game?

  It takes the value of every coin on the board, Jackpot symbols excepted, and applies a single random multiplier between x1 and x20. Nothing is removed, so the coins remain for later symbols to work on.
• Do the Surprise symbols transform in the base game?

  No. Both the Surprise and Jackpot Surprise symbols land in any position during base play but stay inert there. They only take on other forms once the bonus game is running.
• How many paylines does Clover Vault: Progressive JP have?

  None. It’s a slot game with no win lines; wins come through the collection symbols and the bonus game rather than matched symbols across a line.
• When is Clover Vault: Progressive JP released?

  Clover Vault: Progressive JP’s release date is 15 September 2026.
• Who makes Clover Vault: Progressive JP?

  Mancala Gaming.