Two hops from Squid Game reaches 79% of every Korean title Netflix has charted

Squid Game charted in 94 countries, more than any other Korean title we track. Start from it and walk outwards — step to every title that shares a credited actor, then to every title those share an actor with — and the Korean catalogue closes up fast.

502 of the 636 titles — 78.9% — are within two hops. Take one more step and you have 615, or 96.7%. Four steps exhausts everything the walk can reach.

What this does and does not mean

It does not mean these works resemble each other. A hop is one shared credited actor. A character actor with a scene in a 2013 thriller and a scene in a 2024 romance joins them here, and nothing about the two productions is alike.

What it does mean is that the Korean output Netflix has charted is drawn from one pool of people, not several. There is no cluster of films that recruits from a separate population, no television world sealed off from cinema. If there were, the walk would stall — and it does not stall until it has covered almost everything.

We tested the obvious alternative explanation, that a handful of very prolific actors are carrying the whole thing, and it did not survive: removing the hundred busiest people leaves 94.2% of titles still connected as one body. The closeness is produced by the many, not the few.

The seventeen it never reaches

Seventeen titles share no credited actor with anything else in the set, so no walk from anywhere arrives at them. They are not far away; they are disconnected, which is a different fact.

Some are genuinely standalone. Some are titles where Wikidata records one or two cast members and those people appear nowhere else — which makes them look isolated when the entry, not the production, is what is thin. We cannot separate the two cases from this data, so we report the seventeen and say why the number should not be read as a count of self-contained productions.

The bigger absence

270 Korean titles have no cast recorded in Wikidata at all. They are not at distance infinity; they are outside the walk entirely. Every figure above describes the 636 that could be walked, and the true structure of the whole 906 is something this data cannot show.

If anything, the direction of that error is knowable: adding cast can only create hops, never remove them. The catalogue is at least this connected, and probably more.