The Elder Scrolls, infamously. Since they are open-world games, they used heavy scaling to let you explore wherever you want in the overworld from the very beginning.

It was alright in Morrowind. There, your level just controlled which enemies appeared (so you wouldn’t see high-level daedra until your level was in the teens).

Oblivion utterly fucked it up by having everything scale to your level, so you could revisit the starting area and a normal bandit would be wearing a full set of magical heavy plate worth tens of thousands of gold while demanding you hand over twenty coins.

Skyrim was somewhere in the middle, which lead to all combat being inoffensively bland the whole way through.