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Codex of Fortune Slot ᐈ Review, RTP, Variance. Play for Real 🎰

Codex of Fortune is a volatile Art Nouveau-style follow-up slot from NetEnt, and it plays out on 5 reels with 40 win ways. Like the predecessor, Turn Your Fortune, it’s all about climbing the upgradable 5-tier prize ladder in the Hold & Respins feature and the Bonus Round. The latter comes with 7 levels of prize ranges up to 10,000x your stake, and you can save collected keys from the respins feature to get a head start in the bonus round.

Demo game is not available for the current moment!

User Rating: 8.0/10 (1 votes)

RTP 🔗: 96% [ i ]
Variance: HIGH
Max Win: x10000.00 [ i ]
Betways: 40
Release: 30.06.2021 [ i ]
SlotRank: N/A
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Codex of Fortune slot review

Instead of coming up with something brand new, NetEnt has decided to build on a rather mediocre release from their back catalog, namely Turn Your Fortune. Codex of Fortune comes with a similar Art Nouveau visual style, and the features are also very similar. The biggest difference is found in the math model, as you can now look forward to possible payouts up to 10,000x your stake, instead of the forgettable 2,000x potential on offer in the original.

Another interesting difference is the ability to “save keys”, and thus sacrifice Hold & Respin payouts to get a head start in the bonus round (where much bigger prizes can be landed). How you play this will determine your RTP quite drastically - between 90.2 % and 98 % - but returns will hover around 96 % for average play. As in the original, it’s really all about collecting symbols to climb the 5-tier prize ladder, and collecting keys to upgrade the prize ranges.

Codex of Fortune Slot - Reels Screen

Codex of Fortune slot Features

The butterfly wild steps in for all regular pay symbols, like wilds usually do, and this helps you form winning combos. The Fortune Wins feature is tied to the massive 5-tier device you see on the left-hand side. It contains 5 prize tiers across 7 upgradable levels, and it comes into play both during the Hold & Respins feature and the Bonus Round.

The Fortune Respins feature is triggered when you land 2 scatters anywhere, as well as a regular win, on the same spin. The symbol from the regular win becomes the ‘collectable symbol’. Only blanks, more collectable symbols and a special key symbol lands during the respins feature, and you can win up to 200x your stake at the most.

If you land at least one instance of the collectable symbol, and/or a key symbol, you will be granted another respin. All collectable symbols are sticky on the reels, and the feature ends if you land a respin with only blanks. The collectable symbol is collected in a small meter, and you move 1 tier up the Fortune Wins prize ladder per meter you fill.

The key symbol turns the 5 prize tier cylinders one position clockwise, and this upgrades all 5 Fortune Win prizes to a higher level. When the respins feature is over, you enter the Save the Keys feature. You can either use the keys you’ve collected to get your Fortune Prize Win, or you can save the keys for the Bonus Round. The highest RTP strategy is to always save your keys.

You need to land 3 scatters on reels 1, 3 and 5 to trigger said Bonus Round, and a bonus wheel will then award between 7 and 13 free spins. The wheel also selects a collectable symbol for you, and hands out a key symbol if you’re lucky. You can then use up to 3 saved keys to start higher on the Fortune Prize ladder.

All collectable symbols you land fill the Fortune Win meter, and you need to collect 20 symbols to level-up 1 tier. Special +10 symbols count as 10 collected symbols however, and there is also a +1 extra free spins symbol to look out for. Keys turn the 5 cylinders to reveal upgraded prizes as usual, and 10,000x your stake is the level 7 top prize.

The 200 Spins Codex of Fortune slot Experience

This is definitely one of those games that sound way more complicated than it actually is when you read about them. In that regard, watching the brief and edited highlights video from our 200 spins test session might help make things a lot clearer for you. Simply hit the play button below, and you’ll quickly get an overview of what to expect.

Codex of Fortune Slot - Feature Screen

Review Summary

If the above feature description had you scratching your head for a bit, please allow us to clarify in a brief summary. The game is quite simply about triggering respins or free spins, in which you’ll collect symbols and keys to climb and upgrade the Fortune Win prize ladder. The respins feature is mostly there to keep you afloat, while far more significant payouts can be landed from the bonus round.

The RTP varies a lot depending on your “strategy”, and theoretical returns can go as low as 90.2 %, or as high as 98 %. It’s always best to save your keys for the bonus round if you want the highest possible returns in the long run. However, giving up “smaller” respin wins means you’ll need a bigger bankroll to stay afloat. This can be a fine line to balance, and it certainly complicates things for players who just want to spin the reels and don’t think too much.


  • Hold & Respins w/ prize upgrades
  • Bonus round w/ bigger prize upgrades
  • Save the keys strategy affects RTP
  • Win up to 10,000x your stake


  • Might be too convoluted for some players

If you enjoy Codex of Fortune slot you should also try:

Turn Your Fortune - is the predecessor release from NetEnt, and it comes with a very similar cylinder prize upgrade feature. The big difference is that you cannot save keys to affect the RTP here, and the highest possible prize is “only” 2,000x your stake.

Coils of Cash - is a literal powerhouse of a game from Play’n Go, and it plays out on 6 reels, 1 top reel and 2,304 ways to win. The power coil horizontal reel builds multipliers up to 625x via cascading wins, and you can win up to 30,000x your stake in the bonus round.

Victorious MAX - is another release in NetEnt’s Max series, and it comes with a staggering 30,000x your stake potential. The bonus round boosts all wins with a 6x multiplier, and the RTP is a very decent 96.88 %. The base game might be a bit of a grind, but hardcore gamblers might wanna give this one a whirl.

Codex of Fortune Attributes

Provider: NetEnt
Release: 30.06.2021 [ i ]
Type: Video Slots
RTP: 96% [ i ]
Variance: HIGH
Hit Frequency: 25.4[ i ]
Max Win: x10000.00 [ i ]
Min bet $, €, £: 0.2
Max bet $, €, £: 100
Layout: 5-4
Betways: 40
Features: Additional Free Spins, FreeSpins, Respin Locking Win, Respins, Scatter symbols, Symbols collection (Energy), Wild
Theme: Gems
Objects: Keys
Genre: N/A
Others: Dark blue, Violet, Birds, Turtle
Mobile: Yes
Technology: JS, HTML5
Last Update: 11.06.2021

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Video and Image gallery

Codex of Fortune. Codex of Fortune slot
Codex of Fortune. Codex of Fortune slot
Codex of Fortune
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Reels Screen
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Codex of Fortune Slot FAQs

❔ What is the RTP of Codex of Fortune?

The game’s theoretical returns varies between 90.2 % to 98 %, depending on your “save the keys” strategy.

❔ What is the optimal RTP strategy in Codex of Fortune?

It’s quite simple. You always save the keys you get in the respins feature, and use them when the bonus round triggers. Keep in mind that this means you’ll win a lot less in the base game, so you’ll need a bigger bankroll to keep afloat between bonus rounds.

❔ How volatile is Codex of Fortune?

The volatility is high in this game, and it can take a serious toll on your bankroll between bonus rounds. This is especially true if you implement the above “save all keys” strategy.

❔ What is the biggest win possible?

You can win up to 200x your stake in the respins round, while the bonus round offers a max Fortune Win prize up to 10,000x your stake.

❔ How does the Fortune Win Respins feature work?

Triggered by 2 scatters + a winning combo, it’s a Hold & Respin feature where the winning symbol is collected to climb the 5-tier prize ladder. Keys are collected to upgrade the prize range. You can sacrifice the respins prize and save the keys for the bonus round, if you wish.

❔ Is there a free spins mode in Codex of Fortune?

Yes, you get up to 13 free spins and a collectable symbol from the bonus wheel. A key might also be awarded, and saved keys can be used to give you a head start up the prize ladder. The bonus round triggers only once per 368 spins on average.

❔ Can I play Codex of Fortune slot for free?

Yes, you can test the free Codex of Fortune demo game at the very top of this page (UK players must verify age first).

Codex of Fortune SlotRank

Codex of Fortune SlotRank data

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