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I am looking for a short story which I read as a kid, probably in the late 80ies / early 90ies. It's been a long time, but I'll try to describe it as I remember it.
In the story, the protagonist awakens from cryogenic (?) sleep. He is a successful player of a game simulating historical events which plays out in real time (think "civilization" but in real time); every couple of years, the players wake up, give orders, then go back to sleep. I think in the story, he is "playing italy", and in-game events take place in the 20th century, around the world wars. He is proud of being very successful doing that.
So one of his first orders is to "buy italy", presumably to get the right to play that nation. But to his shock, somebody else is already playing it, and that person is quite thoroughly unraveling everything he built up... I think in the finale, this other player is revealed to be his son or so.
Any hints as to the title and author of this story would be greatly appreciated.