I think part of the reason why #Pokemon Gen 2 has such a lasting legacy is because it created this sense of world that I can't think of being matched.
Pokemon has had a habit of name dropping other regions in games, NPCs in Kalos saying they are visiting from Hoenn, etc
It's one thing to get these cute little nods, but Gen 2 went a step further, which sure we could chalk up to nostalgia maxing fan service, being able to explore a mostly like for like recreation of the Kanto region.
But it also helps create this congruous world. You are not just exploring a region, you are exploring the world of Pokemon. Even if Johto is just one short surf route away from Kanto.
Besides the surf route, there is also the ship between Olivine and Vermillion and the Magnet Train between Goldenrod and Saffron. It's all world building that makes the two regions feel like a complete unit.
Was this a thinly veiled ramble to justify a Magnet Rail screenshot? I mean... Partially...

