What makes casinos so addictive even though the house always wins in the end? Explore casino psychology tricks and designs that entice people into gambling the night away below. They don’t realize how every detail in a casino is designed to make them spend more and crave coming back, no matter how much they lose. Most guests probably don’t contemplate a casino’s design or glitzy decor when they’re placing bets. These attractive establishments have everything it takes to create a fantasy world, from elaborate light fixtures to endless rows of glowing slot machines. On the surface, casinos seem like fun places to spend a Saturday night with friends.