Kingdom Below: Slot Overview

If money symbol collection slots are in vogue—and they clearly are—then you’ll want to check out Kingdom Below from provider Play’n GO. For starters, this isn’t another game where a bearded fisherman hauls in the cash. Instead, Kingdom Below is a blazing-hot slot set in a seriously toasty location. Possibly the abyss—though if it is, it’s an adorably illustrated version of it. While trying not to get skewered by a trident, players get help from a hovering Beast that gathers cash symbols, and there’s a progressive free spins feature that seems to share some DNA with titles like Blueprint Gaming’s Fishin’ Frenzy The Big Splash.

So no sparkling blue seas here—this one drops you into a realm of rocks, chains, and fire. The setting looks great, backed by music that gives Kingdom Below a suitably eerie, dramatic edge (in a good way). Floating above the 5-reel, 4-row grid is the Beast, which is essential for collecting cash symbols—known in Kingdom Below as grab symbols or grab prizes.

Using Play’n GO’s familiar horizontal plus/minus slider, players can set stakes from 10 c to $/€50 per spin. Scoring 7 out of 10, Kingdom Below is a medium-high volatile slot, with a top RTP of 96.25%. There are also four lower RTP versions available. While collecting cash symbols is the main attraction, standard line wins still pay when matching symbols land on adjacent reels from the leftmost reel, across 12 paylines.

On the lower end, flaming stone 10-A card ranks pay up to 10 times the bet for 5 of a kind. Above them are the flaming sword, flaming ring, flaming trident, and flaming crown, which award 50 to 200 times the bet for 5 OAK. There are no wilds in Kingdom Below—apparently they didn’t fit the fireproof theme.

Kingdom Below: Slot Features

One of the first things you’ll spot is the floating Beast gliding above the reels. When it activates, it triggers one of the following outcomes:

• Grab Feature – collects all prizes on the reels beneath the Beast.
• Slide n Grab – the Beast collects all prizes on the reels. A multiplier equal to the number of reels containing prizes is applied to the total win.
• Under Reel – a mystery grab prize is pulled from beneath the reel. These prizes can be either a grab prize, a valueless dud, or, in free spins, a scatter symbol that progresses the free spins trail.

Grab prizes can be worth 1x to 50 times the current bet. They can also pay up to 40x for 5 OAK when they form winning lines. The Grab Feature and Under Reel can occur together, but Slide n Grab cannot happen in the same round as the Grab Feature and/or Under Reel collection features.

Free Spins

Scatter symbols can land on any reel, and landing 3+ scatters awards 10 free spins. As the bonus begins, the Pick a Fire feature starts, granting 1 of 8 possible modifiers. Modifiers come in standard and upgraded versions. The regular modifiers are: 5 additional free spins, More Grab triggers, More Slide n Grab triggers, More grab symbols, Lowest pay symbol is removed, At least 1 grab symbol on every free spin. Wins are not guaranteed, Grab multiplier increases to x2, and 1 random grab symbol is sticky for 1 spin.

Upgraded modifiers are: 10 additional free spins, More Grab triggers at x2 multiplier, More Slide n Grab triggers at x2 multiplier, More grab symbols and 2 lowest paying grab symbols removed, The 3 lowest pay symbols are removed, At least 3 grab symbols on every free spin. Wins are not guaranteed, Grab multiplier increases to x5, and Up to 2 random grab symbols are sticky for 1 spin.

During free spins, only 4 modifiers may be active at once—one of each modifier type—meaning you can’t run both the regular and upgraded version of the same modifier simultaneously. When multipliers stack, their amounts are added together, noting that some multipliers apply only to specific features.

The free spins round uses a 12-position trail. Collecting scatter symbols advances you along the trail. Scatters are only collected when they appear on the same reel as the Beast during Slide n Grab or Under Reel collection. Reaching positions 2, 6, and 10 awards extra picks, while positions 4, 8, and 12 grant +10 free spins. The retrigger win multipliers are x2, x3, and x10, and these multipliers apply to grab wins only. Once position 12 is reached, no further free spins can be added. The maximum number of free spins possible is 50.

Kingdom Below: Slot Verdict

Kingdom Below does a solid job of masking the familiar lineage behind its design. No one’s claiming Play’n GO deliberately copied anything, but the connections to games like Pragmatic Play’s Big Bass Bonanza and Blueprint Gaming’s Fishin’ Frenzy The Big Splash (plus plenty of similar titles) are easy to spot. For better or worse, Play’n GO has swapped out fish for an Underworld-inspired theme. That may disappoint players who can’t get enough of fishing slots, but it’ll likely please anyone tired of ocean backdrops who still wants a cash-collect mechanic presented in a different wrapper.

Whether it truly feels “fresh” is up for debate, since much of Kingdom Below’s foundation will be familiar, yet it does bring some newer touches. The floating Beast is one of them—often keeping a low profile in the base game, but occasionally waking up to toss a bit of value your way. The fact that there are three distinct collection methods is also a welcome addition. As noted, the Beast tends to be fairly relaxed in the base game, then becomes more involved once free spins begin. The bonus itself is put together nicely, combining pre-feature picks for added tension with a progression system that improves the further you manage to push it. This style of structure has proven effective in other slots, and it works here too, thanks to the range of possible effects.

Kingdom Below offers a top payout of 6,000 times the bet, which is respectable, even if the chance of hitting it is 1 in 868,685,581. If you compare that to Bigger Bass Bonanza as a somewhat similar reference point—where the probability is 1 in 981,884—picking King Below could give some players second thoughts. Still, odds aside, Kingdom Below is a compelling spin on cash symbol collecting that at least tries to carve out its own identity.