Tomb raider 2 for the psx had insta-save. I was trying to jump across a far gap to reach a dragon statue. Every time, I would fall to my death. so as Lara was falling to her demise, I would just reload from the point before I make the jump. I did this so fast over multiple tries, that I accidentally hit save file instead of load file. My save was now useless because Lara would die every time.