40 Shamrock Diamonds PrizeTower

40 Shamrock Diamonds PrizeTower is a Kalamba Games slot released on 20 April 2026. It takes a classic fruits-and-sevens reel set, puts it on a 5x4 grid with 40 lines, and adds the PrizeTower: a ladder of prizes you climb by filling the screen with diamonds. The game is listed at 96% RTP (with RTP ranges available to operators), medium volatility, bets from 0.40 to 100 and a 1,100x maximum win.

Luck Of The Irish

The reels float over a meadow of shamrocks, with pots overflowing with diamonds in both bottom corners and a rainbow glow behind the frame. The PrizeTower ladder runs down the left side under the logo, and the Buy Bonus button sits at the bottom left. During free spins the background turns to a golden sunset, and a bell counter appears on the right of the reels.

The symbols are pure classic slot: cherries, grapes, plums, golden bells marked BONUS, purple sevens and big cut diamonds, with a four-leaf clover as the Wild.

The interface is compact. The bottom bar shows the balance, the total win and the bet, with a stack-of-coins bet button, a large spin button, a lightning turbo button and autoplay on the right. The number of lines, 40, is printed in the top corner, and wins are announced with huge gold numbers across the middle of the reels.

The PrizeTower

The ladder shows how many diamonds you need on screen and what they pay. At a bet of 100 it reads: 6 diamonds – 200, 8 – 300, 10 – 500, 11 – 1,000, 12 – 1,500, 14 – 2,500, 16 – 10,000 and 18 – 100,000.

In multiples of the bet that is 2x, 3x, 5x, 10x, 15x, 25x, 100x and 1,000x. The steps are gentle at the bottom and brutal at the top: going from 14 to 16 diamonds quadruples the prize, and the last two diamonds multiply it by ten. With 20 positions on the grid, 18 diamonds means almost the entire screen.

Line Pays

The fruits pay the least. On the line pays page, at a bet of 100, cherries, grapes and plums each pay 250 for five, 50 for four and 12.50 for three – 2.5x, 0.5x and 0.125x the bet. The remaining symbols are on the first of the two line pays pages, which our screenshots do not cover.

Stacked Wilds

The clover Wild comes in stacks. Two base game screenshots show full Wild reels: one with Wilds on the second and fourth reels paying 200, another with a full Wild reel on the second reel paying 275. With 40 lines on four rows, a full Wild reel touches a lot of lines at once.

Diamond Wins In The Base Game

The bigger base game results in our screenshots come from diamonds. A screen with diamonds spread over all five reels pays 1,010 – just over 10x – and a spin with diamonds on the right-hand reels plus a Wild at the top pays 570. Small bronze coins fly across the screen as these wins are counted.

Those two totals line up neatly with the ladder. 1,010 is the 11-diamond step of 1,000 plus 10 from lines, and 570 is the 10-diamond step of 500 plus 70. In other words, the PrizeTower does most of the paying on a good base game spin, and the fruit lines are small change on top.

Free Spins And Bells

The golden bells carry the word BONUS, and bells matter inside the free spins too. A panel on the right of the reels shows +3 Spins above three bell slots. At spin 1 of 20 all three slots are empty; by spin 12 two of them are lit. The label makes the reward clear: fill the third slot and the round is extended by three spins.

The free spins are where the Wilds and diamonds stack up. The first spin of a bought round pays 650, and spin 12 alone pays 1,900 with Wilds stacked across several reels, bringing the total win to 4,085 at that point.

The PrizeTower is active in the free spins as well – the ladder stays on screen, and diamonds keep landing alongside the Wilds. With more Wilds on the reels, a free spin can pay from both the lines and the ladder at the same time.

Buy Bonus

The Buy Bonus menu offers three versions of the free spins, and the bet level is picked with a Tier selector. At the tier shown the prices are: 10 free spins for 2,900, 15 free spins for 4,562.50 and 20 free spins for 6,225, marked with one, two and three diamonds. Our free spins screenshots come from the 20-spin option, and the stake display during the round shows the 6,225 price.

At a bet of 100 those prices work out to 29x, about 45.6x and 62.25x. Per spin, the options cost 290, about 304 and about 311 – so the bigger packages are slightly more expensive per spin, and the extra diamonds on their cards suggest they come with something more than just extra spins. Check the game’s rules before paying the premium.

The 4,085 total after 12 of 20 spins in our session shows how the maths works: a bought round has to do a lot of work to beat its price, and a 1,100x cap limits how far above it a round can go.

It is also worth knowing that the game is offered with different RTP settings. The 96% figure is the one listed for the game; the information screen in the casino’s version shows which one you are playing.

Who It Is For

It suits players who like classic symbols but want a clear, visible target on every spin – the PrizeTower ladder makes each diamond count. If you are after a big multiplier ceiling, 1,100x is modest, and the top of the ladder needs an almost full screen of diamonds.

You can try this game on AztecParadise Online Casino. There’s a unique casino bonus offer of 300% up to £2000 for a limited time.