Have you ever walked into an online casino feeling that familiar rush… but craving something more? Something that makes your blood pump faster than another round of blackjack or endless spins on the latest slot? Welcome to the secret, intoxicating world of rare casino games — the hidden treasures most gamblers never even know exist. One of the more promising discovery mechanisms is AI recommending games based on player style — an algorithm that notices a preference for low-variance, community-based play might surface Fan-Tan before a player ever searches for it. At Betroy.net, we're obsessed with bringing these forgotten legends back to life. Half of their appeal is that the rituals players built around them never died — we collected those beliefs in our tour of casino superstitions.
Lists of unusual casino games usually treat them as curiosities. They are more interesting as evidence: the games that spread and the games that did not differ in consistent ways, and the pattern explains a good deal about what a modern casino lobby looks like.
Four games worth knowing
Sic bo. Three dice, a large betting layout, and a house edge that varies enormously by bet — around 2.8% on the simplest big/small wagers and above 15% on some of the specific triples. It is common in Asian casinos, rare in European ones, and has found a second life online where a large layout costs nothing to display.
Pai gow poker. Seven cards split into a five-card and a two-card hand, both of which must beat the dealer’s. It produces an unusually high rate of pushes, which makes bankrolls last longer than in most games at the same stake — the house edge is real but arrives slowly.
Banca francesa. A Portuguese three-dice game with a famously simple structure: bet small, big or aces. Regional almost to the point of invisibility outside Portugal, and a good illustration of how distribution rather than merit decides what you can play.
Faro. Not rare but extinct, and the most instructive of the four. It dominated nineteenth-century American gambling with a very low house edge when dealt honestly — so low that honest operation was barely profitable and rigged dealing boxes were manufactured and sold openly. The game lost the trust it needed and disappeared by the mid twentieth century.
What decides whether a game survives
The games still on a floor share four properties, and the ones that faded usually lacked at least two:
| Property | Why it decides |
|---|---|
| Decisions per hour | Revenue follows turnover, which follows speed. This is why slots outperform every table game |
| Rules that need no explanation | A game requiring instruction loses players at the moment they are most willing to play |
| A verifiable edge | After faro, no game survived that players suspected could be rigged |
| Low operating cost | A dedicated dealer and table are expensive; a screen is not |
Online distribution changed the fourth condition completely, which is why several games that had contracted to near-invisibility are more available now than they were thirty years ago. It changed nothing about the first three.
One consequence worth carrying to any unfamiliar game: check the house edge of the specific bet rather than of the game. Sic bo ranges from under 3% to over 15% on the same table, and the difference is entirely in which box you put the chips on.
Frequently asked questions
Which rare casino game has the lowest house edge?
Of the ones still playable, pai gow poker and the simplest sic bo bets are competitive with mainstream table games. But house edge varies by bet rather than by game — sic bo runs from under 3% to over 15% depending on which wager you choose.
Why did faro disappear?
Its house edge was so low that honest operation was barely profitable, so rigged dealing boxes became widespread and were sold openly. The game lost the trust it depended on and was effectively gone by the mid twentieth century.
Why do casinos drop games that players enjoy?
Floor space is allocated by revenue per square metre, which follows decisions per hour. A slow game with a dedicated dealer loses that comparison even when it is popular with the people who play it.
Has online gambling revived any rare games?
Yes. Games whose main cost was staff and floor space — sic bo above all — are far more available online than they ever were in physical casinos, because a large betting layout costs nothing to display.
Is a rare game a better bet than a common one?
Not inherently, and often the opposite: unfamiliar games frequently carry higher edges on their most attractive-looking bets. Check the specific wager before assuming novelty means value.
Comments
Fan-Tan was the surprise here. The pace is completely different from a slot — there is actually time to think between rounds, which I did not expect to enjoy as much as I did.
Good list, though I would push back on the idea that lower player volume means looser settings. That is an operator decision, not a consequence of popularity.