Fortunium Review: Forty Paylines and the Mystery Symbols
A Stormcraft Studios release on forty paylines, built around mystery symbols that resolve into a single matching icon. What that does to win frequency.
Fortunium is a useful entry point into a distinction that most catalogues blur: the difference between the studio that builds a game and the network that distributes it. This one was built by Stormcraft Studios and reached players through the Microgaming network, which is why it appears alongside titles from an entirely different development lineage.
Forty lines and what they cost
Five reels, three rows, forty fixed paylines. Forty is at the upper end of the fixed-line range and it produces a busier base game than twenty, with more frequent and individually smaller wins.
The cost objection is the obvious one and it is worth answering properly. Per spin, forty lines cost more than twenty at the same coin value, because the stake covers every line. Per hour, the difference is much smaller, because the higher win frequency returns more of that stake along the way. Cost per spin is the wrong measure for comparing line counts; it only tells you the size of the unit, not the rate of depletion.
Mystery symbols, and why they widen the spread
The distinctive mechanic is the mystery symbol. Several can appear on a spin, and rather than each substituting independently, they all resolve into the same single icon.
That is a meaningfully different proposition from a wild. A wild hedges: it becomes whatever each combination needs, so one wild helps in several directions at once and its contribution is reliably moderate. A mystery does not hedge. Four mysteries resolving into the highest-value symbol is a large matching group; the same four resolving into the lowest is nearly worthless. The mechanic converts a reliable moderate contribution into a coin flip between a substantial win and none.
The consequence is a wider spread of outcomes than the line count alone would suggest. A forty-line game normally implies steady small returns, and the mysteries interrupt that pattern with occasional results well outside it.
How it compares within the catalogue
Against 9 Masks of Fire, which holds its value back for a round reached through one symbol, this game distributes more of its return through base play and produces its larger results there. Against Agent Jane Blonde, a nine-line design from a much earlier period, the difference is generational: one pays rarely and legibly, the other frequently and with a mechanic that needs explaining.
Neither arrangement is better. A player who wants to understand a game within fifty spins should prefer the older shape; a player who wants base play to remain interesting for an hour should prefer this one.
What is not stated here
Return-to-player figures, the maximum win and the release year are omitted, because they vary between operators and revisions and no single published figure covers every deployment. The studio attribution above is stated because it is stable; a percentage quoted from one operator’s configuration is not.
The mechanics are the part that decides fit, and they summarise cleanly: forty lines producing frequent small wins, interrupted by a mystery mechanic that resolves to one icon and therefore either pays well or barely at all. The review directory indexes the titles that work the other way round.
How Fortunium Works, on One Card
Forty lines, and a symbol that lands before deciding what it is. On a card:
Every mystery on the screen resolves to the SAME icon. Several resolving high is a substantial win; the same number resolving low is close to nothing.
A wild hedges — it becomes whatever each line needs. A mystery does not, which is exactly why it widens the spread of outcomes.
Wins count on 40 fixed lines — each takes one cell per reel, and the stake covers all of them on every spin.
The Symbols, and What Each Does
| Symbol | Role | What it does |
|---|---|---|
| Mystery symbol | Group reveal | All mysteries on the spin become one shared icon — big when it lands high, near-worthless when it lands low |
| Regular symbols | Paying symbols | Ordinary line wins on the forty fixed lines |
What the design buys, and what it costs
In its favour
- Forty lines produce a busier base game than twenty, with more frequent wins
- Mystery symbols widen the spread of outcomes beyond what the line count suggests
- Cost per hour is closer to a twenty-line game than cost per spin implies
Against it
- A mystery does not hedge: four resolving low is nearly worthless where four wilds would not be
- Forty lines cost more per spin at the same coin value
No score is given. Nothing on this page was play-tested, and a number would imply testing that did not happen.
Gambling content, for entertainment only. Outcomes are determined at random and no strategy alters them. Play within limits that can be afforded, and consult the support services available in your jurisdiction if play stops being enjoyable.
Common questions
How does a mystery symbol differ from a wild?
A wild substitutes for whatever each line needs, so one wild can help several different combinations at once. A mystery symbol reveals a single icon and every mystery on the screen becomes that same icon, which means it either builds one large matching group or contributes very little.
Why does that produce a wider spread of results?
Because the outcome depends on which icon is revealed and how many mysteries are present. Several mysteries resolving to a high-value symbol is a substantial win; the same number resolving to the lowest-value symbol is close to nothing. A wild would have hedged between those extremes.
Is forty paylines expensive to play?
Per spin it costs more than a nine or twenty line game at the same coin value, since the stake covers every line. What it buys is win frequency. The comparison that matters is cost per hour rather than cost per spin, and on that measure forty lines sit close to twenty.
What does the steampunk setting tell you about the game?
Nothing mechanical, as with every theme in this catalogue. It is worth noting only because the setting is less reused than Irish or Norse iconography, which makes the title easier to identify from a lobby thumbnail.
Which studio actually made this?
Stormcraft Studios, one of the independent developers that supplied games through the Microgaming distribution network rather than being part of it. The distinction matters when reading a catalogue, because the studio name and the distributor name are frequently confused.
Published