The Sumerian Game
Putting this in the “A Thousand Words” category might be a little awkward because this is a text-based simulation, but The Sumerian Game and its successors like Hamurabi (spelled that way due to programming limitations) were among, if not the first, long-form strategy/management games. Using text-based inputs and randomization, you could either succeed massively or fail just as massively.
As my family enjoyed the classic Simcity games when I was younger, I thought it was very interesting to find what started it all, or at least what popularized it all. Like OXO (A tic tac toe simulator playable on one of the first computers), this stands as a piece of gaming history. Simulations had to start somewhere.