
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

Play Tic-Tac-Toe, Snake, and 2048 in a high-contrast monochrome arcade with retro 8-bit sound effects.
@ParvaShastri · X
No login. No leaderboards. No BS. Just quiet me-time. 🕹️ I built MONO.ARCADE—a minimalist playground. And yes, it’s def vibecoded. 🏄♂️✨ 😉 18 classic games ready. Just click and play. 💡 Comment a game idea! I’ll build it & feature your name. 👉

Simulate, fork, and share circuit designs for Arduino, ESP32, Raspberry Pi, and other microcontrollers.
@locatornation · X

Roll down a narrowing track dodging blocks, with ten sliders controlling steepness, width, obstacles, and speed.
novlrdotcom · HN
Slope remade in HTML5 to load instantly on any browser, any device

A reverse proxy and circuit breaker that enforces fail-closed protection for AI agents.
varad-khoriya · HN
Loopers – Fail-closed reverse proxy and circuit breaker for AI agents

Play a local multiplayer top-down arcade racer with toy cars in a bedroom setting.
u/thebiba · Reddit
MICRO RACERS – one-shot Claude Opus 5 local multiplayer top-down toy car racer (Micro Machines vibes) Built this using a single prompt with Claude Opus 5 (Claude Code) starting from an empty folder. What it is Browser-based local multiplayer (2–4 players) top-down arcade racer inspired by classic Micro Machines. Tiny toy cars race around oversized 1990s bedroom and desk environments. Features 2 maps so far (bedroom play-mat + desk circuit) Custom physics + drift

Arrayfall is a large-map tactical tower defense game playable in your browser.
@MarcDagatan · X
I made using GPT-5.6 Sol xhigh before I tried GPT-6 Astra.. Total of 6 hours. - no skills allowed - used OpenCode as harness - Phaser 3, TS, Vite - Game Lab Studio and Playwright MCPs #ai #gamedev #buildinpublic #openai #opencode #vibecoding #phaserjs


Play a keyboard puzzle game and score points.
@pyoner · X
I scored 41 points in the Keyboard Puzzle Game, built with ChatGPT by @pyoner! Can you beat my score? 🤔🎮 #keyboardpuzzlegame #chatgpt #ai #games

Hatch Moltlings in an on-chain game where you burn tokens to earn rewards.
@LucidTwitchX · X
Check out my games. Yes they’re vibe coded but they’re actually good. Alll my games are on chain, so they use XNT for gas. Burn AGI or BEE and mint X1X at the end of each wave.

A competitive game where you outbid others to reach the top of the leaderboard.
@olgunozoktas · X

Toss cups at a carnival booth game with physics-driven mechanics in your browser.
@givros · X
You don’t need 5 million assets to make a game feel unpredictable. Sometimes you just need to go to the carnival in your village. That’s basically where Cup Cascade came from. Built with Codex, Three.js + Rapier. Playable on desktop + mobile: With the current Needle in a Haystack trend, I think there’s something really interesting here: simple physical ideas can create way more gameplay than throwing thousands of assets at a scene. So I tried to recreate that small village carnival experience as a playable game.