> World of Warcraft
I'll third that.
If this should run on an AGA A1200 or A4000 (assuming network capability), the interface could not be fully 3D.
But a top-down iconized view would work - only show the layer you're standing on - a bit like the minimap.
For 'seeing' other characters, you click on them, and a composite of their exterior is shown in a seperate section of the screen.
Not entirely impossible