Crypto Connections

Sixteen terms. Four hidden groups. Find what ties them together — the last one always looks obvious in hindsight.

01 — Rules

Select four terms that share something, then submit. Solve all four groups before you run out of mistakes — you get four.

02 — Reading the colors

Gold is the easiest group, then green, blue, and purple — the purple group is usually wordplay.

03 — Stuck?

One hint per puzzle names an unsolved category. Using it is flagged when you share your result.

Create four groups of four.

Mistakes remaining