Editorial note: this is a general guide to how Champion of the Underworld works. Slot rules, feature availability and RTP can vary between operators and game versions, so always check the in-game information panel before you spin. Slots are games of chance — nothing here is a prediction of results, and no strategy changes the odds.
Champion of the Underworld slot review
Champion of the Underworld is a Yggdrasil slot released in October 2022 and the second game in its Underworld series. Built around Hades and a cast of monsters, it plays on six reels and four rows with 4,096 ways to win and pairs two Yggdrasil mechanics: GigaBlox oversized symbols and Wild Fight, in which Hades battles the high-paying symbols and turns the ones he beats into wilds. The maximum win is 10,000x the stake.
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How Champion of the Underworld plays
Wins pay across 4,096 ways from the leftmost reel. GigaBlox symbols can land in 2x2, 3x3 or 4x4 sizes, so one giant symbol can cover part of several reels at once, and a golden skull acts as the wild.
Wild Fight can start at random during the base game. Hades squares up to the high-paying monster symbols on the reels, and each one he defeats becomes a wild, which can join up wins that were not there before the fight.
Free spins and the Wild Fight multiplier
Five or more free spins symbols start the bonus, and you get one free spin for each of them. The free spins symbol can also land as a GigaBlox, which helps it reach the five needed.
Once the round begins, Wild Fight runs on every spin. Each wild that lands, including the ones Hades creates, charges a multiplier meter, and the win multiplier rises in stages up to x25. The fights therefore count twice in the bonus: once for the wilds they create and again for the multiplier those wilds build.
Game information
| Provider | Yggdrasil |
|---|---|
| Released | October 2022 |
| Reels and ways | 6 reels, 4 rows, 4,096 ways |
| Volatility | Super high (Yggdrasil’s rating) |
| Maximum win | 10,000x stake |
| RTP | Shown in the game’s information panel |
| Stake per spin (UK) | From 20p. UK stakes are capped at £5 a spin (£2 for players aged 18 to 24) |
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Find Champion of the Underworld in the Fortune Games lobby (18+). You can also browse our slot game guides.
All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time.
Frequently asked questions
What is Wild Fight?
It is a Yggdrasil mechanic in which Hades fights the high-paying symbols and turns the ones he beats into wilds. It can trigger at random in the base game and runs on every free spin.
How many free spins does Champion of the Underworld give?
You get one free spin for each free spins symbol in the trigger, and at least five are needed to start the round.
How high can the free spins multiplier go?
It climbs as wilds land during the round and tops out at x25.
What is the RTP?
The game’s information panel shows it. RTP can differ between operators and game versions, so check the panel in the version you play.
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