Holy Diver

Holy Diver is a Big Time Gaming slot where a knight marches beneath the reels, opening chests along the path and charging the stones on his shield. Released in 2019, BTG launched their first Reel Adventure here — progress is stored per stake level, and the bonus features become fiercer as you climb. Want to understand the mechanics without risk? The demo is available on this page, and other BTG titles can be found in the slots section on Legalbet.

96%
Return to player
RTP means Return to Player and describes the theoretical payout ratio of casino games. The higher the RTP, the higher percentage of your bets you can expect to get back in the form of winnings. The RTP in real-money casinos can differ.
23306x
Max win
High volatility
Volatility
Volatility, in online gambling, is a term used to assess the risk of losing a bet. In other words, it suggests how rare or often players can expect to win or how big or small they can expect the prizes to be.
Slots
Game type
0,1
Min bet
The lowest amount a player can wager on a specific game. It is also a bonus requirement where you can bet above a certain amount to claim your bonus.
20
Max bet
The rule which indicates the highest amount you can bet on a casino game. It is also a bonus requirement where you can only bet up to a certain amount to claim your bonus.

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Information

Bonus game
Available on mobile
Jackpot
Quickspin
Auotoplay
Demo mode
Game developer Big Time Gaming (BTG)
Release date 25.01.2019
Last page update December 2025

More games by Big Time Gaming (BTG) 18

Holy Diver: Design and Theme

🖼️ Graphics

By day: clear skies, columns and a neat path along which the hero walks with his square shield; above, a golden frame with stained-glass wilds and glossy gemstones. When the free spins activate, the visuals turn colder: moonlight, sea, shimmering frames, and WILD inscriptions lighting up on the shield — clearly a “higher level” mood. The screen feels alive: a chest appears, a flash — and the grid shifts before your eyes.

🎶 Sound

The soundtrack is diverse: in the base game, a calm “knightly-aristocratic” theme plays, almost like a background overture. Once the bonus begins, the full rock track “Holy Diver” kicks in with guitars and drums. The contrast is sharp — some may find it odd, but it works: daytime porcelain switches to nighttime metal, and the slot suddenly wakes up.

Holy Diver Mechanics

🥁 Grid Size

6x2–7

📊 Ways to win

586,971

➕ Bonus Game

🤑 Jackpot

💸 Extra Bet / Ante Bet

🪂 Fixed Multipliers

♻️ Respins

❎ Gamble

Winning Combinations

Top Symbols:

Symbol

2

3

4

5

6

Purple Gem

x1

x2

x3

x3.5

x15

Red Gem

x0.2

x0.3

x0.7

x1

x5

Blue Gem

x0.2

x0.6

x0.9

x4

Green Gem

x0.2

x0.5

x0.7

x2

Base Symbols:

Symbol

3

4

5

6

A

x0.2

x0.4

x0.6

x1.5

K

x0.2

x0.4

x0.5

x1.1

Q

x0.1

x0.3

x0.4

x1

J

x0.1

x0.3

x0.4

x0.7

10

x0.1

x0.2

x0.3

x0.6

9

x0.1

x0.2

x0.3

x0.5

Special Symbols

  • Wild (stained-glass tile): substitutes for any symbols; may appear “burning” or as a full-reel wild; in the Swords modifier, can carry a multiplier up to x7. Does not pay by itself.
  • Gem (purple/red/blue/green): premium symbols; during the Gem Symbol Bonus and in free spins, they turn into wilds, multiplier depends on the level.
  • Diamond: collected only in free spins; triggers extra spins and increases the base number of reel positions.
  • Chest: intervenes in a spin on reels 2–5 and awards one of four modifiers.

Bonus Game

Chests of Fortune (chests)

Chests appear in the base game and “intervene” on reels 2–5 for a single spin. This is the main source of mini-features: each chest awards one of the effects below. On each stake level, at least 1 chest is guaranteed every 5 spins — but up to four spins in a row without any chest are also possible.

  • Standard Symbol Bonus: chooses one of 9–A and turns it into a wild on reels 2–5 for the current spin.
  • Sword Bonus: adds 1–3 wild reels with multipliers up to x7; active for one spin.
  • Fireball Bonus: adds up to 4 Flaming Wilds — one per reel 2–5; positions are random; works for one spin.
  • Gem Symbol Bonus: reveals one or more gems on reels 2–5 and converts them into wilds; multiplier depends on level (L1=x1, L2=x2, L3=x3).

Shield of Fortune (progress)

  • Gems from chests fill the shield on the left; up to 4 gems can drop at once.
  • When you collect 4, you choose: take 10 free spins or upgrade the level (maximum level is 3).
  • On Level 3, free spins trigger automatically.
  • Progress is separate for each stake: change the stake and the progress switches to its own track.
  • Level-ups enhance future effects (multipliers of gem wilds and maximum Megaways).

Free Spins & Diamond Retrigger

  • Start: You enter free spins after filling the shield (or automatically on Level 3) — you receive 10 spins.
  • Main effect: Every Gem on reels 2–5 becomes a wild with a level-based multiplier — L1=x1, L2=x2, L3=x3.
  • Bet value: Fixed to the stake that triggered the bonus and applies to all 10 spins.
  • Diamond collection: During free spins, the knight collects diamonds; the first four award +1 spin each, the fifth gives +8 spins and increases the base reel height (more Megaways).
  • Reel height growth: 1st retrigger — 4–7 symbols per reel; 2nd — 6–7; further retriggers — fixed 7.
  • End: When the extra spins run out, the round ends and the game returns to Level 1.

RTP, Volatility, Max Win

The RTP in Holy Diver is 96.55%. Volatility is high and “tiered”: the higher the level (from 1 to 3), the stronger the potential of the bonus round — but the rarer the meaningful hits. The maximum win is x20,500.

Our Verdict

Holy Diver is a true “path-building” slot: you actually feel the progression and the constant dilemma of “take it now or push for a higher level.” Chests aren’t just visual modifiers — they can blow up the grid with x7 sword wilds, and every time it looks like a mini-premiere. Free spins become much stronger on Levels 2–3, but reaching them takes longer; plus the progress is stake-dependent — change the bet and the tree resets. The contrasting soundtrack adds drive and keeps the engagement high.

Recommended for players who like “building up” a slot and are ready to endure quiet stretches for the sake of a strong bonus. If you prefer constant action, this one may feel slow.

If you want modern chaos with layered mechanics:

  • Kill Em All (Nolimit City) — lab-style action with weapon respins and a max win of x11,916; great for fans of complex non-standard bonuses.
  • Fire in the Hole 2 (Nolimit City) — upgraded Lucky Wagon Spins and a max win of x65,000; for those who enjoy ultra-volatile hits with persistent modifiers.

Post by:

Andy H
Andy H
Site Manager
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