Clover Vault: Progressive JP

Clover Vault: Progressive JP is a coin-collecting Irish slot from Mancala Gaming, set in a misty green forest where a leprechaun guards a vault full of gold. As the name says, the main attraction is a pair of progressive jackpots that grow with every bet placed on the game.

The game is played on a 5x3 grid with no win lines. Regular wins are only paid in the Bonus Game and through the Claim Win feature, so every spin is about landing coins in the right places. RTP is 95%, volatility is high, and the maximum win is capped at 50,000x the bet. Stakes run from 0.20 to 18 per spin.

Coins and Jackpot Symbols

All symbols are gold coins. The leprechaun coin carries a cash value, while the clover coins are jackpot symbols: green Mini, blue Minor and purple Major. Jackpot symbols can land in any position in both the base game and the bonus game, but in the base game only Mini and Minor pay out, and only if they appear in the Claim Win sector. In the bonus game every jackpot symbol can be won, and more than one jackpot of each type can be collected in a single round – except the Grand.

Claim Win Feature

Claim Win is the base game’s own mini-feature. A golden Claim Win frame can appear on any position of the grid and stays there for 3 to 5 re-spins, collecting every value that lands in that spot. All spins run in a single spin state, and when the counter on the frame reaches zero, a percentage of the collected value is paid out: 10%, 20%, 30%, 40%, 50%, 100% or 200% of the total. A frame showing 200% can therefore double everything it gathered.

Surprise Symbols

Two mystery chests add suspense. The green Surprise symbol stays closed in the base game, but in the bonus game it can turn into a coin, a Collector symbol, or a Mini or Minor jackpot. The golden Jackpot Surprise symbol works the same way, but it can only reveal a Mini, Minor or Major jackpot. Both transform after the bonus game.

Collector and Multiplier Symbols

The Collector is a green-and-gold pot of clovers. In the bonus game it adds up all coin values on the grid, jackpot symbols excluded, and multiplies the sum once by a random value between x1 and x20, without removing the coins from the grid.

The lucky horseshoe is the Multiplier symbol. It appears only in the bonus game, doubles the values on the coin symbols, and then disappears. It cannot be used to complete the grid for the Grand jackpot.

Bonus Game

Any five symbols on the middle row trigger the Bonus Game, a classic hold and win round. It starts with 3 respins, and every new symbol that lands resets the counter to 3. The round ends when the respins run out or when the grid is full.

Progressive Jackpots

The Major and the Grand are progressive: every bet contributes to them, and both can be won in the Bonus Game. Mini and Minor have fixed values. The Grand is won by filling all 15 positions of the grid with symbols of any type – in that case it replaces all other prizes of the round. The jackpot panel above the reels shows the current values, and the paid amount can differ slightly from the counter because of animation and server delays.

Theme and Graphics

The art is soft and cartoonish: tall trees, ferns and a glowing forest path frame the reels, a large pile of gold coins sits under the jackpot panel, and the clover motif runs through every symbol. The green, gold and purple palette makes the coins easy to read, and the vault doors on the Surprise symbols fit the theme nicely.

Verdict

It suits players who enjoy coin-collect games and like to chase growing jackpots, and who are fine with a base game built around features instead of line wins. The Claim Win frame keeps quiet spins interesting, while the progressive Major and Grand give the high-volatility maths a real target.

You can try this game on MrJones Online Casino. There’s a unique casino bonus offer of 300% up to £1200 for a limited time.