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World Format IDs

This Wiki page serves as a list of claimed world format IDs, in order to avoid conflicts. (Of course, world format-level compatibility does not imply engine compatibility.)

Note that world version numbers can only be negative - ZZT will skip a positive world version number, treating it as the number of boards in a world.

Start	End	Claimed by	Project
-1	-1	Tim Sweeney	ZZT 2.0 - 3.2
-2	-2	Tim Sweeney	Super ZZT
-3	-3	(Unclaimed)
-4	-4	zzo38	FreeZZT
-5	-5	WiL	Nautilus
-6	-2776	(Unclaimed)
-2777	-2777		(ZXT/ZAX header for Super ZZT)
-2778	-3544	(Unclaimed)
-3545	-3545		(ZXT/ZAX header for ZZT)
-3546	-32768	(Unclaimed)