I was playing the last mission on XCOM: Enemy Unknown. During the play the game started acting weird, so I saved and closed the game. Then I restarted it and went to load the file just to find out that all the saves of the last mission were missing (about 2 hours of play).
Is this a bug or a feature? Because it really made me sad, they could at least warn that is not possible so save the game during the last mission.