Champion of the Underworld Slot Review

Champion of the Underworld: Slot Overview

Champion of the Underworld throws you straight into Hades’ arena, with ghostly spectators, turquoise flames and skulls piled round the reels. As someone who has spent a fair few hours on Hades Gigablox, I like how this one keeps the underworld vibe but tones down the gore with a semi‑cartoon style. The heavy guitar soundtrack kicks in once you spin, and it fits the pace of the battles on screen.

The slot runs on a 6x4 layout with 4,096 ways to win, powered by the Gigablox mechanic. On every spin, reels merge to drop symbol blocks from 2x2 up to 4x4, which then break down into 1x1 symbols when wins are evaluated. On top of that, you have Wild Fight, free spins with a gamble option, a progressive multiplier and, outside some markets, a bonus buy, so the game rarely feels static.

Champion of the Underworld Slot Information

Champion of the Underworld is a very high volatility, or “Super High”, release from Yggdrasil. The top RTP model sits at 96%, but there are versions at 94%, 90.5% and 86%, so I always check the info panel before I start a serious session. Stakes run from 20p up to £100 per spin, covering casual play and those moments when I feel like pushing the bankroll harder.

The 6x4 grid with 4,096 ways pays when at least three matching symbols land on adjacent reels from the leftmost side. There is no standard payline structure to keep track of, which suits me, as I prefer way‑wins on high variance slots. The max win is capped at 10,000x your bet, which is decent for this risk level, though you do feel the dry spells when the game goes cold.

Symbols in Champion of the Underworld

Symbol wise, Champion of the Underworld sticks to a clean set of eight pays. The lower‑value end uses the four card suits – clubs, diamonds, spades and hearts – each paying 0.5x your stake for six of a kind. Premiums are four scary‑looking monsters: a green horse, two different spectral women and a horned ox, paying between 1x and 2x for six. A golden skull acts as the wild, substituting all regular symbols, while the “free spins” scatter drives the bonus.

Symbols and Paytable

Symbol	Quantity	Payout
	6	x2
	5	x1
	4	x0.5
	3	x0.25
	6	x1.5
	5	x0.75
	4	x0.4
	3	x0.25
	6	x1
	5	x0.5
	4	x0.3
	3	x0.2
	6	x1
	5	x0.5
	4	x0.3
	3	x0.2
	6	x0.5
	5	x0.25
	4	x0.15
	3	x0.1
	6	x0.5
	5	x0.25
	4	x0.15
	3	x0.1
	6	x0.5
	5	x0.25
	4	x0.15
	3	x0.1
	6	x0.5
	5	x0.25
	4	x0.15
	3	x0.1
	Wild
	6	x2
	Scatter

Champion of the Underworld Slot Features

The Gigablox mechanic is front and centre in Champion of the Underworld. Any symbol, including wilds and scatters, can land as a 2x2, 3x3 or 4x4 block. When a win is checked, that block splits into individual 1x1 symbols, so a 4x4 Gigablox effectively counts as sixteen of the same symbol. I like how this can suddenly flood the grid with matching monsters or scatters without changing the basic win rules.

Wild Fight is the other core feature and it fires at random in the base game, then on every free spin. When it triggers, Hades fights each high‑pay monster in view. Any symbol he defeats turns into a wild, and that includes full Gigablox. Watching a big monster block flip to skulls across several reels is where the slot starts to feel dangerous in a good way, especially when ways stack up.

For those who can use it, the bonus buy gives two shortcuts into the free spins round. Paying 90x your stake buys five free spins, while 1,000x buys the full twenty. When I tested the game outside the UK, I preferred paying for the top tier, as starting with more spins makes climbing the multiplier ladder more realistic. Just be aware the volatility does not calm down simply because you bought the feature.

Free Spins in Champion of the Underworld

Free spins in Champion of the Underworld trigger when at least five scatters land in view, and Gigablox scatters count by their size, so a 2x2 block is worth four scatters. Each triggering scatter awards one free spin, so it is common to start with between five and ten. Before the round begins, you can gamble your spins, via a two‑tier sword pick game, for a shot at more, up to a hard cap of twenty.

Inside the bonus, Wild Fight is active on every spin and each monster Hades converts to a wild nudges up the global win multiplier. You move from x1 to x2 after nine transformations, then need a further eleven for x3, thirteen more for x5, fifteen more for x10 and seventeen more for the cap at x25. Every upgrade adds two extra spins. When the fights go your way, the combination of extra wilds and a climbing multiplier feels properly ferocious.

Champion of the Underworld: Slot Verdict

From my time with Champion of the Underworld, it feels like a solid Gigablox and Wild Fight entry, even if it does not hit as hard stylistically as some earlier underworld outings. The arena setting, monsters and heavy soundtrack work well together, and the maths model can swing from dead spins to explosive screens in a heartbeat. If you are comfortable with super high variance and like grinding towards a 10,000x hit, this one is well worth a session.

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