
ArtStudy — Guess the Painter · Daily Art Quiz
A daily art quiz where you guess painters and build a streak.
@stantokman · X
please destroy it
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A daily art quiz where you guess painters and build a streak.
@stantokman · X
please destroy it

Spot real versus fabricated propaganda in daily trivia challenges.
@themicronwave · X
Not a startup, but a free daily game.

Generate randomized math formula problems to practice.
@7spiritz · X
Check out what I just built with Lovable!

Practice prompt injection attacks against an AI agent across 10 levels.
Getchowned · HN
The AI Lethal Trifecta

Solve daily coding challenges with AI assistance and track your developer streak.
u/Administrative_Egg78 · Reddit
I built this because AI was making me a dumb&lazy engineer I noticed something sad about how I use AI. I was shipping faster, but practicing less. I could get answers quickly, but I was losing the habit of working through the fundamentals myself. So I built Unrot: short daily challenges for developers across languages, system design, architecture, data engineering, and other tracks. Game/xp and rewards system, a tiny bit competitive. No signup required to try it: https://unrot.dev

Calculate and compare Survivor.io damage scenarios with custom ATK and skill inputs.
Survivor.io Calculator — 《弹壳特攻队》伤害与升级计算器,用统一参数比较装备、技能和升级方案

Calculates the optimal Minecraft enchantment anvil order to minimize XP costs.
Minecraft Enchantment Calculator — Minecraft 附魔合并顺序计算器,寻找铁砧经验成本更低的书籍与装备组合顺序

Take a 12-question quiz testing your knowledge of digital income methods.
@XERECRAZY4hll · X
Check out what I just built with Lovable!

Play as an AI, gobbling tokens while dodging prompt injections and rate limits in this browser arcade game.
dschwede · HN
Token Gobbler – the goofy game where you're the LLM

Complete security quizzes across 5 levels to prove your code understanding.
u/rontop151 · Reddit
I vibe-coded an anti-vibe-coding app. Yes. I used AI to build a whole academy that trains you to stop blindly shipping AI code. Five levels. Security quizzes. Badges. A streak. The whole “read the error before you panic” curriculum. It’s like building a gym while eating pizza on the treadmill. Play it here → https://videcodingacademy.web.app This post was also vibe-coded. Happy Vibe Coding 😂 submitted by /u/rontop151 to r/SideProject [link] [comments]

A simple but challenging counting game with polished interaction details.
数数游戏 — 数数游戏,简洁但不简单,交互细节人性化 (PC)

Solve jigsaw puzzles of Chinese classical poems including Tang dynasty poems and school curriculum texts.
拼拼古诗 — 古诗拼图小游戏,涵盖唐诗三百首和小学初中高中教科书中的古诗 - [更多介绍](https://mp.weixin.qq.com/s/G5Swlt7hH_3tWZDZ1ffgqw)