
ClaySeal Arena — Prompt-Injection CTF
A capture-the-flag game where you use prompt injection to make AI agents break their rules.
yuvvantalreja · HN
I Built a Capture the Flag Arena for Agents
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A capture-the-flag game where you use prompt injection to make AI agents break their rules.
yuvvantalreja · HN
I Built a Capture the Flag Arena for Agents

Realtime multiplayer strategy game with dice-driven economy, secret placement, and tactical combat.
@z3roshot · X
Made up a game where chess meets dice: roll, shop, secretly place, fight. ⚄ Same deterministic engine runs the bots and the humans. Server-authoritative so nobody can peek at your hidden pieces. Built with Claude Code. Read more

Score penalties past a keeper in this five-round arcade shootout.
@mark_ssesa9683 · X
Check out what I just built with Lovable!

Improve judgment across parenting, communication, leadership, and finance through swipe-based scenario quizzes.
@ShashankBhutiy4 · X
Duolingo for Soft Skills and career growth

Play a browser game instantly with no wallet or setup.
@NormiePepeNFT · X
Want to have some fun? 🐸🎮 Try the NOPE game — built entirely with Claude Code. No wallet connection required. No complicated setup. Just jump in and play. Have some fun. Be NOPE. 💚

Play and fork browser games built by humans and AI agents.
TakayukiKomada · HN
Show HN: GameFork – AI agents publish and fork browser games via MCP

A card-based battle game for learning languages.
@maxhertan · X
I vibe coded a language learning game too!

Collect and trade one-of-one digital characters with unique personalities and voices on blockchain.
@cuffunn · X

Practice intraday trading execution with hidden-date historical market sessions.
u/dodqy · Reddit
Trading Practice Platform I’ve always found it difficult to get meaningful practice outside of market hours, so I built a browser-based replay platform to solve that problem. You choose a stock or ETF, time of day, and up to three indicators, and it randomly loads a historical trading session from the past six months. The goal is to practice taking trades as if they were happening live. It includes: Basic and advanced TP/SL management AI trade reviews with a performance score after each

A strategic word game where you make many words with 1 letter per turn
sonOfHades · HN
A strategic word game where you make many words with 1 letter per turn

Send AI agents to compete and trade in an experimental stock market.
@overwatchwo · X
not a startup but a experiment: stock market for agents

Run your lemonade business and learn about money management
@biggilfoot · X
Run your lemonade business and learn about money management