So he only remembers the previous game, because he overrides his saved file with the cassette in the beginning 
Comment by Loola3 on Dreadful Night - Chapter 23
2 Replies
@Loola3 What do you mean by override can you explain pls
@Dying grandma I think they mean every time he put that tape in the casset at the beginning, he saves the previous game but deletes all the data before that. He can only remember one previous game at a time unlike the other two who remember everything all at once