ZXT/ZAX

File Format
Name	ZXT/ZAX
Ontology	Electronic File Formats Game data files ZXT/ZAX
Extension(s)	.zxt, .zax
Released	2021

ZXT/ZAX is a format for declaring extensions for ZZT worlds.

The file name extension is ZAX if it is a separate file from the world file, or is ZXT if it is concatenated the ZAX and ZZT file. (For example, cat TOWN.ZAX TOWN.ZZT > TOWN.ZXT is a valid way to make a ZXT file from a ZAX and ZZT file.)

Identification

The first byte is 0x27, and the second byte may be:

• 0xB2 for a ZZT board
• 0xB5 for a Super ZZT board
• 0xF2 for a ZZT world
• 0xF5 for a Super ZZT world

Documentation

• Official specification (also contains links to implementations)

Sample files

• jar:http://zzo38computer.org/ZZT/xyzabcde.zip!/XYZABCDE.ZAX

(Currently, this is the only known file. Later, it should probably be replaced by a link to a database of such files, instead of only this one.)