
Playground — Fabraix
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
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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

Click or tap to spin emojis in an interactive arcade-style game.
@Hacksore · X
i didnt even know these existed alas, the most vibe coded looking site 😂

Test your reaction speed and play 17 mini-games including puzzles and arcade games.
leolee829111 · V2EX
做了个反应速度测试站, 5 个工具+17 个小游戏,求各位帮忙看看 前段时间看了个小游戏站赚美元的教程,想着自己也试试手。没搞太复杂的——先做了几个认知测试工具,又嵌了些免费小游戏,搭了个站。 地址:checkreaction.com ( https://checkreaction.com/ ) 目前有这些: - 反应速度测试,5 轮取平均,带年龄基准对比 - 瞄准训练,30 个随机目标,测速度和精度 - 打字速度,30 秒 WPM - 序列记忆、数字记忆两个记忆测试 - 17 个 iframe 小游戏,纸牌、台球、消消乐、Cut The Rope 这些 技术跟 FH6Wiki 一样简陋——纯静态 HTML + 原生 JS ,扔 Cloudflare Pages 上。反应测试就一个 4.5KB 的单文件,也扔 GitHub 开源了。 为啥做这个 顺手查了下关键词难度。"reaction time game" KD 只有 4.8/100 ,排第二的是个 DR=0 、8 个月的新站,体验分只有 22 。第六名是个床垫公司。Google 甚至拿 Red

Add persistent memory and knowledge to AI agents with drop-in files, URLs, and native MCP integration.
kitforai · GitHub
kitforai Kit for AI developer hub — official SDK, Claude Code plugin, MCP setup, and llms.txt.

Learn math, science, finance through 450+ interactive mini-games and lessons.
@PAIMultiverse · X

A rhythm game where you distinguish fake instructions and follow real ones to the beat using arrow keys.
Blue White Flag — Play Blue Flag White Flag Games Online Free

Browse and create AI-generated designs: LEGO builds, Minecraft blueprints, Perler patterns, Tesla wraps.
@deepnlp_contact · X
We are launching Craftsman Agent Studio & Store today on PH, which turns creative ideas -> Agentic Designs -> Connect to skilled craftsman -> Physical products. you like to checkout our launch?

Interactive demo for experimenting with grading mechanics.
@TheEduardoRFS · X
I vibe coded a demo for grading, not in a great shape but it's fun to play a bit.

Online chess platform for kids with a focus on privacy and safety.
Jeffery

A fishing game where you cast your line, dodge descent, hook items, sell them, and upgrade your equipment.
@mobxgames · X
What do you think of my latest vibe-coded game? Feel free to try it out:

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

An FPS game built as a parent-friendly alternative to Roblox.
davitb · HN
I'm a father of two, 7 and 12. They are obsessed with Roblox, especially Rivals. Like a lot of parents, we did not love it. We tried the usual things: block it, limit it, set timers." It became a daily battle, a lose-lose situation. So I flipped the problem. Instead of fighting what they loved, I decided to lean into it, but with a twist. Why just play an FPS when you could build one together? My kids became the PMs. Claude and I became their engineer. I was shocked by how fast we moved. We picked a name, Cooked and started building. Get in. Lock in. Get cooked! In the first 3 hours, we had an actual FPS we could play together in the browser. Next day I invited my friend's two kids over. Suddenly, I had four PMs. We had 3 laptops, 1 iPad and 1 iPhone. So in 30mins we added mobile support and could play all 5 together. The kids would ask for features: "Can we have a rocket launcher that knocks people off the map?" "The knife should stab faster when you hold it." I know al