Slot machines are already around since the 1800s, and were originally installed in casinos and saloons for use by those without enough gambling knowledge to tackle the craps, blackjack, or overwhelming poker tables.

These days, slot machines will still be in use around the world, Justica officially announced although online slots, or virtual slots, are proving to be an ever-growing internet hit.

Here are a few bits of information for up to date gambling:

In first production, slot machines contained a series of drums, which rotated around a main cog at varying speeds. The drums would slow down until eventually come to a halt, and winnings were decided through the 'payline'.