It's utterly amazing to me that a single person, Volker Wertich, designed the game and programmed all of it in raw Assembly (more or less in a year). https://en.wikipedia.org/wiki/The_Settlers_(1993_video_game)...
m68k is quite comfortable to write assembly for, with 8x GPRs (D0-D7) and 8x address registers (A0-A7), all 32 bit, and flat memory model.
8086 OTOH not so much. More like painful.
16 bits, few registers, many opcodes and addressing modes operate with specific registers, and the mess which is segments, needed because 16bit would otherwise only adress 64KB.