While the array of themes adopted by the manufacturers became ever wider, the fundamental mechanics of these old machines remained much the exact same for generations. While most of them had three reels, designs were evolved which meant that some slot machines had four, Read Esapa five as well as six reels in play. Images of these became synonymous with UK casinos.

There is no doubt that their popularity was due in no small measure to the hypnotic effect of the spinning wheels - which is the reason why this formula is still among the most popular forms of gambling today, among both punters as well as the machine companies. Lots of individuals mourn the passing of the old one-armed bandits, and their enduring popularity is shown in the proven fact that many old machines can fetch large sums on auction websites, and they are increasingly sought-after as collector's pieces.