Game developers create realistic graphics and sound effects for slot games by utilizing advanced technology and creative design. They employ high-quality 3D modeling and animation software to craft lifelike visuals with vibrant colors and intricate designs, along with detailed textures and lighting effects for immersion. In sound design, they use professional techniques to produce engaging effects and background music that enhance the visuals. This seamless integration of elements results in an engaging atmosphere that captivates players and boosts the overall appeal of the games.