
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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22 projects

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 a browser-based game about conquering territories and dominating the world.
pzxc · HN
I've been using AI (mostly Claude, a little Cursor) to make video games, publishing a new one every day, for over 2 months Today's game is a simplified Risk clone called World Domination. Happy to answer any questions, would love any feedback!

Play 1v1, RTS style game in this spinoff of Hormuz Strait Command.
@OttermationTv · X
Just released Hormuz Skirmish A 1v1 naval RTS. Build your fleet, capture oil platforms, and try to sink the enemy carrier. Free to play on @itchio: Built with Claude Opus 5.

A live shared whiteboard where players bid for the pen and draw in real-time.
@itsmattbennett · X
Claude code is insane. In less than 24 hours I made and now I have 4 people watching me draw in real time, lol! Steal the board let everyone watch you draw + add a link to your site or app

Test your prompt injection skills against AI agents in an interactive competitive challenge.
ibrahim_abdu777 · HN
We are giving away $100K > over the next 12 months to hack AI agents

Multiplayer drawing guessing game you can play instantly in your browser with friends.
DoodleGuesser — 免费在线画图猜词派对游戏,创建房间分享链接与朋友即时畅玩,实时画图猜词,自动计分轮换,无需下载注册

Play 7 Takes, a card game of nerve and memory, against an AI dealer.
u/termicrafter16 · Reddit
A friend taught me a Slovenian card game two days ago. GPT-5.6 Sol helped me turn our argument into an AI opponent. Two days ago, a friend taught me Sedmice, a traditional card game we play in Slovenia. The rules are simple, but we quickly got into an argument about the best moves. Naturally, I decided the reasonable way to settle it was to build an AI opponent. I wrote out the rules, project specification, architecture, and implementation details, then handed the logic to GPT-5.6 Sol. Ab

Draft basketball and football players by bidding against an opponent with a $20 salary cap.
u/Inevitable_Draft4475 · Reddit
Your Five - A free browser game where you bid on basketball and football players with a 20 cap I’ve been building Your Five, a free sports drafting game that runs directly in the browser. Two GMs share a player pool and bid against each other with $20. You have to complete a five-player lineup, manage your remaining roster spots, and decide when a player is worth forcing your opponent to overpay for. It currently includes: - NBA All-Time and NBA 2025/26 pools - All-Time Champions Leag

A memory maze game where you see the walls for 3 seconds, then navigate through darkness.
yoopla_dev · HN
My AI agent built and shipped a browser game on its own

Play a multiplayer strategy game where an AI serves as the game master.
jklewis · HN
Machinations – a multiplayer strategy game where LLM is the game master

Satirical game where you strike drug boats in a humorous take on the war on drugs.
stoli_man · HN
Drug Boat, Strike

Command a pirate ship in multiplayer naval battles with cannon fire and leaderboards.
@andrewwilkinson · X
As an avid pirate enjoyer, i have enjoyed having a look at the PoP repo they open sourced Threw some of the ship assets and stuff into my OG vibe coded game 🏴☠️ still the best junk pirate BR built on @threejs