Oh, damn, this is actually a really tough question.

... I guess I'd say Monster Hunter. Pokemon comes close, but I'd consider it to still have some "space"/"sci-fi" elements, though obviously that's not the main focus of the game. But MonHun doesn't involve any concept of space or elaborate technology, being in a sort of curious mix of high fantasy but providing incredible details for everything included in it. The most advanced machine I've really seen outside of some of the flashier weapon designs in MH is a steam engine.