Choosing between keeping or giving back one or several cards does not represent the most consequential decision.
Selecting a machine requires genuine attention and different versions exist: Triple Play, Jacks or Better, Double Bonus, All American Poker, Joker Wild, Deuces Wild...
The differences are not blindingly obvious, especially for beginners. This can therefore be a problem, since devising strategies proves to be complicated.
As years passed, the players have seen machines being replaced by innovative concepts. As a whole they are all the same, but the probabilities tend to be different.
For a game lasting around 4 hours, the player will lose an average of £50 if they bet the maximum credit of £1 on a Jacks or Better machine (9/6).
Conversely, the loss is estimated to be £500 for the Jacks or Better machine (6/5).