All you have to do is describe your idea in natural language, then let the AI write the code.
Created with AI, Fly.pieter.com is a free-to-play browser-based MMO flight simulation game. The game's creator is Pieter Levels, a software developer and entrepreneur who leverages AI.
“It was all built by me alone, using only HTML, JavaScript with jQuery, PHP and SQLite. I didn’t collaborate with anyone and liked to do it myself,” he said.
According to 404 Media, Levels’ style is called “vibe coding,” which means writing code based on feelings. This programming style focuses less on structure and details and more on guiding AI to perform tasks.
On February 22, Levels shared on X that he used the AI programming tool Cursor to create Fly.pieter.com with just one simple command: "Let's create a 3D flying game in the browser with skyscrapers." After being refined, the game was officially born.
“A fun free-to-play MMO flight simulator, 100% AI-generated, no need to download installers or update gigabytes every time you want to play,” the website says.
Just two weeks later, Levels announced that the game is on track to earn $52,360 a month. Of that, $360 comes from in-game item sales. The rest comes from 22 ads that appear in the game.
Among the sponsors, Bolt is one of the biggest advertisers. This is a company that develops AI tools for web programming and mobile applications. The game is also shared by Elon Musk's account, with nearly 220 million followers, helping to reach millions of people in a short time.
Many people who rated the game as attractive thanks to Levels already had a large following on social networks, X alone had 623,000 followers. Many of them worked in the AI industry or were interested in AI, and were able to promote the project through sharing and experiencing the game.
The concept of “vibe coding” was coined by Andrej Karpathy, a former researcher at OpenAI. All you have to do is describe your idea in natural language, then let the AI write the code.
“There is a new style of programming that I call ‘vibe coding’. You just feel it, accept the results, forget that the source code exists. Most of it will work after copy-pasting,” Karpathy wrote on X.
This approach is becoming more popular thanks to the development of AI models like ChatGPT, Anthropic's Claude, Cursor Composer, GitHub Copilot, and Replit Agent. These tools make it possible for anyone to program without understanding code.
In fact, AI tools have made writing games easier. Developer Peter Yang, now at Microsoft, recently demonstrated this by using Cursor and Claude 3.7 Sonnet to create a 3D zombie shooter.
But is “vibe coding” really reliable?
Sharing with Ars Technica, independent AI researcher Simon Willison said that intuitive programming is only suitable for small projects, quick testing. AI is unlikely to replace traditional programming in large applications.
“Creating a game from an AI command is amazing. But maintaining, debugging, and expanding a large project requires a deep understanding of the source code. You can’t just rely on AI without a foundation in programming,” Willison said.
According to: The NY Times, Ars Technica
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