save data for C64 game run out of a .zip?

[offset]

Sorry if this is a noob question.

If I'm running a C64 game (ie. D64) from within a zip, where is the character and game data saved? Is there a separate file elsewhere or is the .zip changed?

Example games:

Questron
Bard's Tale

[Stinky]

I don't think it works at all. Uncompress them.