This is an interesting idea, and one that applies to a larger arena that just game levels, I think:

This document seeks to lay a foundation for the conservation of our 'virtual architecture', the environments and places that make up the synthetic worlds of video games. More commonly referred to as 'levels', 'maps' or 'worlds', these environments are the stage for players' experiences in video games. Unfortunately, little has been done to protect, catalogue and analyze these game spaces, but such conservation is necessary in order to provide reference material for study.

The document (why do people still publish stuff like this in horrible PDF?) outlines rules for defining architecture worthy of being preserved, attempts to catagorize different kinds of levels, and uses artschool words like "enucleate" next to offhand phrases like "by the way". I found the entire thing vaguely irritating.

Why particularly game levels, and not games in general? I would love for there to be an archive of games, period, with media backed up and preserved as hermetically as possible. I still treasure my single floppy from RAMPAGE's PC release.

Convention for the Protection of Virtual Architectural Heritage [TerraNova]
The convention itself, non-PDF [Mario Gerosa]

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