What about the alternative earths found in various settings?
Northern Crown has technically been mentioned via Nyambe, which shares continuity with it. But what about the Earth of World of Darkness? Or the one that we see in Dresden Files? Shadowrun?
I'm not the OP, but some don't qualify as Fantasy (such as CORPS, from BTRC) except in the most broad literary sense. Others, (DF, World of Darkness) probably should.
A number of low-fantasy games don't actually have names of their own...
131 (unnamed world) (Rogue Swords of the Empire, Arabian Sea Tales) (1990's, Better Games)
The world isn't named, but there is the Empire... this is pretty variable in tone, by GM, and the world is defined by setting tropes, no maps, etc.
There is magic, so it's not OUR earth.
132 The New World of Crimson Cutlass (1990's, Better Games)
As in, South America, conquistadores
There are references to Europe, but it's intended to play mostly in South America and the Caribbean.
And all before Disney upscaled Pirates of the Caribbean...