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Popular repo cards

Stats from the current card pool (snapshot 2026-10-30). Click a name to visit the repository, or open the card in the game.

These are some of the most-starred repositories in the pool. In Repo Gacha, stars set a card's ATK and repository size sets its DEF, so the cards below hit like trucks. Fame also makes them expensive to fit into a five-card Stack, which is why plenty of winning Stacks are built from humble N and R cards instead.

codecrafters-io/build-your-own-x SR

Markdown · ★ 557,510 · ATK 99 / DEF 45 · open the card

A guide to rebuilding Git, Docker, a database and an operating system from scratch. Starred by half a million people, each of whom will definitely do it this weekend.

sindresorhus/awesome SSR

No language · ★ 527,211 · ATK 99 / DEF 48 · open the card

The list of lists. Every "awesome-something" repository you have ever bookmarked descends from this one, which makes it the most load-bearing table of contents on the internet.

public-apis/public-apis UR

Python · ★ 493,438 · ATK 99 / DEF 63 · open the card

Hundreds of free APIs in one README. The card hits hard because every hackathon project in history started here and ended at the rate limit.

freeCodeCamp/freeCodeCamp UR

TypeScript · ★ 458,220 · ATK 99 / DEF 85 · open the card

A whole free curriculum and the platform that runs it. Its DEF is enormous: it is a lot of repository, and it has helped a lot of people get their first job.

EbookFoundation/free-programming-books UR

Python · ★ 400,526 · ATK 99 / DEF 65 · open the card

Thousands of free programming books, sorted by language. Your "to read" folder was inspired by it and is now just as long.

donnemartin/system-design-primer SR

Python · ★ 376,198 · ATK 99 / DEF 60 · open the card

Diagrams, trade-offs and back-of-the-envelope maths for designing large systems. Mostly read in the 48 hours before an interview.

jwasham/coding-interview-university SR

No language · ★ 363,571 · ATK 98 / DEF 65 · open the card

A complete computer-science study plan written by someone who followed it all the way to the job. The card is an SR because fame is fame; the plan is a lot of work.

torvalds/linux SR

C · ★ 253,830 · ATK 96 / DEF 99 · open the card

The kernel. Maximum DEF, because it is the biggest thing in the pool and everything else runs on top of it, including the browser you're reading this in.

react/react UR

JavaScript · ★ 251,762 · ATK 96 / DEF 90 · open the card

The UI library that taught a generation to say "re-render" out loud. A UR in the game and in most job descriptions.

vuejs/vue SR

TypeScript · ★ 212,489 · ATK 94 / DEF 67 · open the card

The Vue 2 repository, still collecting stars after its own README points you to Vue 3. A legend that politely asks you to leave.

yt-dlp/yt-dlp UR

Python · ★ 203,876 · ATK 94 / DEF 71 · open the card

A command-line downloader with more flags than some programming languages have keywords. Quietly installed on every developer's machine.

Card guides: Popular repo cards · Rare cards by language · Cursed & meme cards