
Startup City
Claim floors on a virtual building to display startup promotions and compete for top status.
@AliYolo_ · X
Everyone is building a leaderboard. I built a city 😂🏙️
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24 projects

Claim floors on a virtual building to display startup promotions and compete for top status.
@AliYolo_ · X
Everyone is building a leaderboard. I built a city 😂🏙️

Host and join tech events and hackathons in a 2D virtual world.
@vaultmeet · X

Combine products and buzzwords to build AI startups and sell them for portfolio income.
u/Big_Nobody_2715 · Reddit
I made a browser game where you turn a toothbrush into a billion-euro AI startup It's a free browser sandbox game. You mix products + buzzwords, build weird companies, and watch them generate income in your portfolio or sell them. Kinda like Infinite Craft but if it was made by a sleep-deprived founder who’s seen too many pitch decks. Play here: https://startup-alchemy-amber.vercel.app/ Let me know if you managed to break it Best experienced in Chrome (works fine in other browse

Practice system design by submitting architectures and experiencing AI-triggered production incidents.
u/No-Preference-846 · Reddit
I built an AI-augmented system design practice tool that triggers a live production incident when you submit your design - not just a critique Every system design prep resource I used was static — read a diagram, read the tradeoffs, move to the next one. Nothing ever pushed back on what I actually built. So I built ChaosBench . You design a system on a canvas — drag components, wire them up — and when you submit it, an LLM (Gemini) finds the actual weak point in your specific design and

Chrome extension for recording screen demos with automatic zoom effects and custom backgrounds.
@gabani_vatsal · X
Building Screen recorder which adds zoom effects and custom backgrounds

Create playable browser games from text descriptions using AI.
@MakermintStudio · X
Today is National AI Day. Good moment to try something you've been putting off. Makermint is free — describe a game idea, watch it go live in minutes, no code. And the team building it actually listens. What you make shapes what comes next. #AI #VibeCoding

Design cloud architectures and explore AI concepts through educational simulation games.
zameermfm · HN
I made a self-built catalogue of education Simulation games

Build and manage a data center campus with power, cooling, and GPU economics.
@PredictionsEdge · X
Check this Data center tycoon game. Think SimCity but for AI infrastructure: Land, power, cooling, GPUs, grid constraints, financial and operational reports.

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

Track video games, write reviews, and see what friends are playing.
@GameHubSit · X
Just launched GameHub MVP 🎮 Rate games, write reviews, build your profile, pick Top 4 & track your journey. Still early — need honest feedback! What did you like? What felt confusing? Any bugs? What would make you return? 🔗 #buildinpublic #gamedev

Create 3D character rigs and animations using AI in your browser, then export to game engines like Unity and Unreal.
@rahul__gh0sh · X
Building the only AI agent you will even need for 3d animation

Build software with a team of AI agents through a game-like interface.
u/East_Operation1151 · Reddit
I built pondas: run a team of AI agents like a game to build an app I've been building this for a while and finally want to show it here. Most AI app builders are one model in a black box. You type a prompt, it guesses, and you hope what comes out works. I wanted the opposite: real control over how the AI builds. So in pondas you run a whole team of AI agents, and you control the loop they work in. What it actually does: - You describe an app in plain words and a team goes