Retro games also stand the test of time because they were built around strong, memorable ideas. The characters, worlds, and mechanics introduced in those early years laid the foundation for many of today's biggest franchises. Think of how Super Mario Bros. established the template for side-scrolling platformers, or how The Legend of Zelda introduced the concept of open-world exploration. These ideas weren't just new at the time—they were revolutionary, and their core design principles continue to influence modern game development. Even decades later, the first time someone plays Mega Man, Metroid, or Street Fighter II, the experience feels fresh because the underlying gameplay is still rock-solid.
https://www.theshowbizshine.com/why-retro-games-are-timeless-simple-fun-and-iconic/