Slot machines, however, began to become more & more popular in casinos as Nevada's gambling regulations relaxed in the early 20th century. Slot machines were a common sight by the 1940s and 1950s when Las Vegas became a major gambling destination, luring players in phonepe appwith its dazzling lights & alluring sounds. Slot machines changed in tandem with Las Vegas's rise to prominence as a global hub for gambling and entertainment. One major turning point was the debut of the first electromechanical slot machine in the 1960s. This invention improved the overall player experience by enabling more intricate gameplay and multiple paylines. Slot machines gained enormous popularity by the 1970s, which prompted the construction of larger casinos with expansive gaming floors stocked with these machines.