Slot Symbols and Ancient Myth: Where the Art Ends and the Maths Begins

Published on February 27, 2026 by Lena Forte

The mythology on a slot reel is real mythology. The thunderbolt is Zeus, the ankh is Egyptian, the runes are Norse, and the dice that preceded all of them really were thrown in Mesopotamia — a history covered in our piece on ancient dice games and the rituals around them. What the mythology is not is a mechanism. The art tells you which story a studio chose; it tells you nothing about what the game is about to do.

Where the symbols actually come from

Four families of imagery cover most of what appears on modern reels. Greek myth supplies Zeus, Olympus and the thunderbolt, and its appeal to game designers is that everyone recognises the cast. Egyptian iconography supplies the ankh, the scarab and the Eye of Horus, which arrived in popular culture through the excavations of the 1920s rather than through any gambling tradition. Norse material supplies runes, hammers and wolves, mostly as reconstructed by nineteenth-century scholarship. And the dice-and-lots imagery is the oldest of the four, because casting lots to decide something is attested across the ancient Near East.

All four are chosen for the same reason: a recognisable story lets a player understand a bonus round without reading instructions. A free-spin trigger that looks like a temple gate explains itself.

What actually decides a spin

Three things, none of which is a symbol's theme.

• The random number generator. Each spin draws numbers independently of every previous spin. A symbol that appeared often an hour ago has no bearing on the next draw.
• The paytable and reel weighting. How often a symbol can land, and what it pays when it does, is set in the game's mathematics. Two games with the same art can ship with different weightings.
• RTP and volatility. RTP is the long-run return built into the configuration; volatility describes how unevenly that return arrives. Studios routinely supply several RTP configurations of the same title, which is why a figure quoted on a review page is not necessarily the figure running in a particular lobby.

This is the part worth keeping: the Zeus thunderbolt in one game and the Zeus thunderbolt in another are not the same mathematical object at all. They are two pieces of art sitting on top of two different paytables.

How to read a paytable instead of a symbol

Open the game's information panel before the first spin and look for four numbers. The RTP, stated as a percentage. The volatility, usually stated as low, medium or high, sometimes on a five-point scale. The maximum win, expressed as a multiple of the stake, which tells you more about the shape of the game than the RTP does. And the hit frequency, where it is published, which is the share of spins that return anything at all.

A high maximum win with a low hit frequency is a game that pays rarely and occasionally pays a great deal. That is a description of the experience, and it is available before you play, in writing, from the studio.

Why the idea of a secret symbol survives anyway

Because the brain is built to find patterns, and a reel is built to supply near-misses. Two matching symbols with the third just above the line reads as «almost», and «almost» is processed as information when it is not. The mechanism is described in our article on why progressive jackpots hold attention, and the physical side of it — the held breath, the raised shoulders — in listening to what your body does while you play.

The mythology is worth reading about for its own sake. For the encyclopaedic version, Britannica's entry on myth and mythology is a reasonable place to start. For what the next spin will do, the paytable is the only document that says anything.

Frequently asked questions

Do slot symbols really come from ancient myths?

The imagery does. Zeus, the ankh, Norse runes and dice all have genuine histories, and studios draw on them because the stories are instantly recognisable. The history is real; the influence on outcomes is not.

Can a particular symbol make a win more likely?

No. How often a symbol can land and what it pays are set in the game's paytable and reel weighting, and each spin is drawn independently. Knowing which god is pictured tells you nothing about the draw.

What should I read before playing a themed slot?

The information panel: RTP, volatility, maximum win as a multiple of the stake, and hit frequency if it is published. Those four numbers describe the game. The artwork describes the studio's choice of story.