🧠 Hive Mind

Can you think like the rest of Reddit?

Hive Mind is a daily social guessing game built on Reddit's Developer Platform (Devvit). Each day a prompt drops in the post — "Name something you'd take to a desert island" — and you submit one answer. You don't score by being right; you score by matching the crowd. The more Redditors who said the same thing as you, the more of the Hive Mind you are.

It's Family Feud meets Reddit's collective unconscious.

🎣 The hook

Come back daily — a fresh prompt every day, plus a 🔥 streak and a running ⭐ hive-score that grows the more days you play.
Instant, satisfying reveal — submit and watch the "hive board" of the community's top answers animate in, with your answer highlighted.
An identity every round — 👑 You ARE the Hive Mind (top answer), 🐝 Part of the swarm, or 🦄 Rogue Thinker (nobody else said it). All shareable.
Every answer is user-generated — the game board is the community. The more people play, the smarter and funnier it gets.

🧩 The clever bit: smart matching

People phrase the same idea a hundred ways. Hive Mind collapses them into one cluster entirely locally — no external API, no key, no cloud:

strips emoji, punctuation and accents
removes filler words (a, the, to, …)
light singularization (dogs → dog)
typo-tolerant merging via bounded edit distance

So Pizza, 🍕 pizza!, PIZZA and pizzas all land in one hive — and icecream merges with ice cream. The matcher lives behind a single canonicalize() seam in src/server/core/cluster.ts — swap in embeddings later without touching the rest of the app.

🏗️ Architecture

src/
  client/        React 19 + Vite UI (builds to /webroot)  ──fetch──┐
  server/        Express on @devvit/server                          │
    core/                                                           │
      prompts.ts   daily prompt bank                                │
      cluster.ts   local "smart matching" engine                    ▼
      state.ts     all game state in Devvit Redis (KV, JSON blobs)
  devvit/        main.tsx — post creation + loading preview
  shared/        types shared by client & server

Client ↔ server: GET /api/init, POST /api/submit.
Storage: Devvit's free Redis only — round config, clustered answers, per-user answer lock, and streaks. No external database.
Live standings: a player's percent, rank and the board are recomputed from current data on every load, so your standing shifts as more bees answer.

🎯 Built for the judging criteria

Criterion	How Hive Mind delivers
Delightful UX	one-tap play, animated honeycomb reveal, warm hive theme
Polish	typed end-to-end, graceful errors, mobile-first
Reddity	it's literally about Reddit's hive mind; every answer is UGC
Hook	daily prompt + streaks + shareable identity
User content	the entire board is community-generated

▶️ Run it

Prereqs: Node 22+, a Reddit account, and the Devvit CLI (npm i -g devvit).

npm install
npm run login          # authenticate with Reddit (paste the code)
npm run devvit:init    # register the app on Reddit
# create a private test subreddit, then put its name in the
# "dev:devvit" script in package.json (replace YOUR_SUBREDDIT_NAME)
npm run dev            # runs preflight checks, then starts playtest

Then open your test subreddit → the "…" menu → Hive Mind: New daily round to create a post, and play.

🛠️ Tech

React 19 · Vite 6 · TypeScript · Express 5 · Tailwind CSS 4 · Devvit (Reddit Developer Platform) · Redis.

📄 License

MIT — see LICENSE.

codewithfourtix/HiveMind

README