

The longest single game of Football Manager is 416 year 134 days of in-game time, and was achieved by Paweł Siciński (Poland) in Gliwice, Śląsk, Poland, on 28 September 2021.
Pawel played on Football Manager 2018 and managed teams from the 4th January 2018 up until the 18th May 2434 and only took 260 days off! This is in-game time by the way which moves a lot quicker.