[lostcolony]

I've seen some work on, and expect some games have used, a similar method where they'll have a bidirectional process to generate something from a seed, AND create a seed after having crafted something, allowing them to mix and match, and still achieve a super high compression rate (as, at the end, all that is stored for each face or other element is the seed that generates it).

Certainly, there are similar things in user space where you can share your creations from some games using a code that was generated or similar.