The game still plays fine. Hopefully someone can correct me if I'm wrong on this, but my understanding is that for a lot of these early CD-based games most of the data is actually taken up by the music so you're more likely to come across some kind of sound glitch than a game-breaking problem?
Scary.
Time to start considering moving to digital to me. I don't have old systems anymore: I sold everything to buy other stuff, including other consoles. I regret selling all those games I used to enjoy but the threads like this make me think that maybe I made the right decision.
Maybe climate has something to do with it too. We have fairly mild winters and summers in the UK so house temperatures don't have much variation and I have never seen disc rot.
I really, really want to back up my DC, GC and Wii discs :/ I keeps pushing it because there's no easy way to do it (I'd buy a PC reader that can read those, but not second hand at $200+)
RAID IS NOT SAFE, and not a backup method. Especially not the common versions at home, but ultimately any one.
I've discussed with a friend that handle a lot of raid arrays, the simultaneous failures of discs in most devices is really, really high.
If you value your data, store it on at least three discs, in different locations (thefts, fire), some of them not plugged, and run crc checks on a regular basis.
If you use the data often, raid is handy, but that's far from safe.
Older cartridges like NES, SNES or Gameboy games have batteries that save the game (though those are replaceable, but you lose your save).
I've experienced disc rot and I've replaced things because of it. It's one of the things where it's easy to be smug about how you've never experienced it or it doesn't happen or you somehow take better care of your things than other people until it happens to one of your discs. Then you understand.
Discs you own probably aren't going to last forever. Some of them will deteriorate at some point.
I have never heard such a thing about NAND flash, so please enlighten me.The exception to this, however, are Vita game cards, which are actually made of NAND flash rather than Mask-ROM, so if they're not powered on at least once every decades or so, they'll eventually lose they're data.
Are there any environmental conditions that contribute to this? I haven't seen a single instance of this and I have many of the first CD-Rom games on PC. I have even a lot of those old ass demo disks from PCGamer from ages ago and none exhibit rot.