All of the AI-only games I've seen use the In-Game Editor mod (might not be the exact name). I've never used it myself so don't know about its specific mechanics, but it lets you watch all the action and displays the proper names on the scoreboard. The human picks a civ to control (probably Venice) and spawns themselves with only some nuclear subs deep into ice where they can't be interacted with. It seems to work pretty well.