Harry Potter and the Sorcerer's Save System, Prologue:
Harry took the wand. He felt a sudden warmth in his fingers. He raised the wand above his head, brought it swishing down through the dusty air and a stream of red and gold sparks shot from the end like a firework, throwing dancing spots of light on to the walls.
He was tangentially aware of the fact that Hagrid was clapping, obviously very excited from him, and Olivander was also praising him in a very polite sort of way, but he hardly noticed, too busy staring at the sudden translucent blue text window that had appeared in front of his face. It said, in large, friendly letters:
AUTOSAVE ENABLED. AUTOSAVING…
He hesitated, and then carefully reached forward to poke at the air with his wand, since the wand seemed to be… involved, somehow. He ignored the looks the two adults were giving him as the window disappeared as quickly as it had arrived.
...What?
Harry flopped back on his brand new bed. It just didn't make sense.
He'd checked the wizarding books he'd gotten on his list… There was no mention of 'autosaves' there, despite the term sounding… very, very vaguely familiar. He'd be hesitant to ask Hagrid, since… Well, Hagrid gave him a weird look when he pressed 'okay' in the save-window-thing, and adults had generally not been very helpful in his life.
His life was definitely turning around, though… In addition to the whole being-a-wizard thing, his aunt and uncle had let him move into Dudley's second room, the one where he kept all his broken toys. Maybe…
He dug around through the discarded and broken toys. No, no, no… It took quite a while to sort through it all, but Harry was nothing if not determined, and he had a vague idea of what he was looking for, not that Dudley had organized in any discernible way… Yes, here it was. Dudley had a Nintendo, which had 8 bits, whatever they were. Unfortunately, he'd broken the controllers, and their wires were snapped. That wasn't what Harry was looking for, even if he had seen a 'repairing charm' in his textbook that looked interesting. No, what he was looking for were the game manuals, which had been dumped nearby.
The manuals were untouched, naturally… Dudley would have no need to read things when trying to play video games. None of them had a save system like he did, but he read enough of them to get a vague idea. There was usually a menu that came up when you hit the button, and you could save from there, right?
"Uh… Save," he tried, whispering to himself in case the Dursley's heard.
The light blue window from before popped up again, virtually identical, save for the fact that it's text was different. This time, it read:
SAVE 1 SAVED
That was… Something. It wasn't the 'autosave', though, which meant Harry had to keep looking, so he pressed the OKAY button and looked down at the various manuals laid out across the floor.
"Hm… Saves?" he tried, stressing the S to make sure he was trying to access more then one save. This time, a different screen came up… There was an auto-save that could be updated, and a manual save. There were 7 save slots, it seemed, but only the first was available- The rest were all grayed out, reading things like "UNLOCKED AT YEAR 2", or "UNLOCKED AT YEAR 3", and so on, whatever that meant. He was given the option to load. Did that mean… He tentatively poked the menu's load button, the two-dimensional text book being pushed back by his finger with zero resistance, like pressing air.
Nothing happened.
Harry squinted, and pulled his finger off the button-
"Oh, bravo! Yes, indeed, oh, very good. Well, well, well ... how curious ... how very curious ..."
Harry jerked a little. He was- He was back in the wand shop. Holding his wand alight, watching the red and gold sparks slowly drift down through the air. He was… Back to the autosave. Back to the point in the day when the autosave popped up and saved, anyway. Did he travel back through time?
Hagrid and Ollivander were looking a little concerned that he'd stopped responding. Well, he certainly didn't want to do all of his shopping again… The save window, wherever it came from, at least seemed to function. Could all wizards do this? It seemed like an incredible power…
As much as he'd love to poke at the air, he had a thought. The save-system (According to those manuals he read) had saved to a SAVE 1 when he said the word, so…
"Erm… Load Save 1?"
He was suddenly back in Dudley's spare room. He was just… Standing there. Like he hadn't moved.
This was weird.
He slumped down on the mattress. He'd have time to explore more about it tomorrow…
By the time he woke up tomorrow, it turns out his decision to put it off was justified, because just after he sat up in bed…
AUTOSAVING…
Time for a brand new day.