I've got Pokemon X (yay!) and today is the first time I finally really get to play. I'm right before the first gym, and everything's going good. I've been playing for a few hours, and I get the 'low battery' signal. Hey, there's a charger right next to my bed, whoo! I'll charge and play at the same time.
An hour later, the system shuts off in my hand. Apparently, my third-party charger doesn't charge as fast as Pokemon X uses battery towards the end of battery life. Fuuuuuck. I can't believe I made the rookie mistake of not saving regularly. Ugh. I'm so ticked off. Thankfully, it was only a few hours and it was pretty easy gameplay. Plus, it's still not as frustrating as the time I accidentally deleted my save file for Arkham City that I was trying to get a 100% complete rate score on. That was a fun 4:30AM moment.
So, GT Gamers, what's your most frustrating save file fail story?