Question 1

What is Fall World?

Accepted Answer

The whole estate as one game you install. You hatch a didy, your character, in your browser; it grows one measured stage at a time on your own machine; and every public build in the estate is a card you can collect, whose rarity is earned from what actually ran.

Question 2

Where are the cards?

Accepted Answer

In the Deck: 664 cards, one per public build — 35 Set, 108 Unique, 169 Rare, 107 Magic, 209 Normal, 36 Unidentified. A card's rarity is computed from what GitHub's own runners did to that build, never assigned, and its art is grown from that evidence.

Question 3

How does a didy grow?

Accepted Answer

From an egg that needs no model, through 7 stages from ~1B to ~100–200B (MoE). It grows only when a measured bar says the job needs it, and shrinks when a smaller stage will do. In the sealed trial of rules, Hatchling 19/60, Runner 19/60, Keeper 37/60; no measured stage cleared the bar of 57.

Question 4

How is a card here different from an NFT?

Accepted Answer

An NFT usually held a link to a picture, and its rarity came from its creator's script. A card here carries the build itself inside the picture, its rarity is computed from evidence anyone can re-run, its creatures breed into ones that measurably work better, and in battle a bigger model does not win.