That's impossible, if you're on TUXX and it implements a 'lock' for using modern worlds on a older version, the older version wouldn't support said lock and that could cause more problems in the long run than it would fix in the short run.
If find it a little hard to believe. Lots of other programs just won't open files generated through newer versions of the same program and they warn the user that the file is from a newer version... and they don't corrupt the file itself in the process. Minecraft currently opens the file with older versions, but then just toasts it... rendering it unloadable or resetting the terrain completely (eliminating the players builds, etc.) Even without actually saving over the file, the file gets damaged, so some change occurs right upon opening. Couldn't it be done by just inserting code in the file when saved with a newer version that the older version just doesn't recognize and, therefore, won't attempt to open the file?
You'd have to change the base versions of game, both disc and downloadable.Not impossible for the virtual version, but I'm unaware if 4J is allowed to rewrite a disc from inside the xbox...
Still don't really get it. Minecraft won't open, say, game saves created by, say, by the Xbox One version without having to change the older base version of the game. Why can't they make the newer Xbox 360 file saves somewhat incompatible with the older versions of the game (say by changing the file extension like Microsoft did with .xls vs. .xlsx files. If you did want to move an old save forward to a newer version, you could put it through a transfer process the same way people had to in order to move their 360 saves onto the Xbox One, but once this was done, wouldn't the older versions of the 360 game just not be able to open the file?
Twitter - @4JSteve
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