In the 1993 episode of The Simpsons, "$pringfield (Or, How I Learned to Stop Worrying and Love Legalized Gambling)", Principal Skinner pitches the idea of opening a casino during a town hall meeting discussing ways to revitalize the economy. And townsfolk seem to dig it. Mr. Burns, owner of the Springfield Nuclear Power Plant, really likes the idea and the boost it should give to the economy and how it will make him richer.
So Mr. Burns decides to build it on the waterfront and name it "Mr. Burns' Casino" and be the owner, while Smithers is his casino manager. Homer leaves his job at the power plant and takes a job with Mr. Burns at the casino as a blackjack dealer when it opens.
While Marge waits for Homer's shift to end at the casino one day, she finds a quarter on the floor and uses it to play a slot machine. She wins. And she almost immediately gets addicted to gambling, while neglecting everyone around her—including Lisa who has an important school assignment.
Bart is too young to gamble at Mr. Burns' Casino—he tries, but gets kicked out—so he starts his own casino for his friends and all their friends to play in his treehouse.
When Homer realizes Marge has developed a serious addiction to gambling—she's there at the casino 24/7—he looks for her in a panic in the casino. His outburst is caught on the casino's security camera, and when Mr Burns sees this, he demotes Homer back to his old job at the power plant.
After Homer confronts Marge about her addiction, she realizes that she has a problem. She returns home and remembers what she had with her family. And Homer settles back into his job at the power plant. Mr. Burns, meanwhile, became a recluse, a germaphobe, once the casino opened and decides to return to the plant.
The casino is later demolished by an explosion. This was because of a mix-up behind the demolition crew in regards to setting it (it was supposed to be set for implosion).