[fc417fc802]

Dwarf fortress, no man's sky, elite dangerous, ...

The combination of "many", "most popular", and "nothing" is overstating it by a wide margin but for example the majority of the vegetation in games as far back as oblivion was procedurally placed.

[rightbyte]

Battlefield 2 had procedural trees and terrain the year before. I think it more or less came with open world maps?