Flight Simulator (fly.pieter.com)
Loading Flight Simulator (fly.pieter.com)...
Connecting to fly.pieter.com
About Flight Simulator (fly.pieter.com)
The multiplayer flight game that started the vibe-coding craze. Take off, fly a shared world, dogfight.
Enter a name and you spawn into one shared sky with everyone else who is online. Fly, land, and dogfight other players, with a leaderboard, chat, a minimap and a rear-view mirror.
The Cessna 172 and Cyberpink are free; the F-16 is a paid unlock. Lower your landing gear before touching down. Startup ads float in the world: Levels sells them as in-game billboards.
How Flight Simulator (fly.pieter.com) was made with AI
The start screen says it all: 'by @levelsio + Cursor + ThreeJS… 100% made with AI'. Levels wrote that the multiplayer runs on 'a Python websockets server that receives and broadcasts all player positions every 100ms', and that Grok 3 wrote the server code. This is the game that set off the vibe-coded game craze in early 2025 and led to Vibe Jam.
Made by Pieter Levels (@levelsio).
How to play
Press Play here to load Flight Simulator (fly.pieter.com) directly inside this page, or open it in a new tab for dedicated window focus. It supports touch controls on phones and tablets. Online multiplayer matchmaking is active.
| G | Landing gear |
|---|---|
| Tab | Leaderboard |
| Space (after crash) | Continue |
| Dual touch joysticks | Fly on phones |
| Gamepad | Supported |
Quick facts
- Multiplayer server written by Grok 3, per the creator
- Sells in-game ads to startups
Questions about Flight Simulator (fly.pieter.com)
Is Flight Simulator free?
Yes, fly.pieter.com is free to play. The Cessna 172 and Cyberpink planes are free; the F-16 is a paid unlock.
Is it multiplayer?
Yes. Enter a name and you spawn into one shared sky with everyone else online, with a leaderboard, chat, a minimap and a rear-view mirror.
Can I play on my phone?
Yes, dual touch joysticks let you fly on phones, and gamepads are supported.
Was it really made with AI?
The start screen credits '@levelsio + Cursor + ThreeJS… 100% made with AI'. Pieter Levels wrote that Grok 3 wrote the multiplayer server code.
Why are there billboards in the sky?
Startup ads float in the world: Levels sells them as in-game billboards to startups.
Tips for Flight Simulator (fly.pieter.com)
- Lower your landing gear (G) before touching down or you'll bounce and crash.
- Watch the minimap before dogfighting: getting jumped from behind is how most streaks end.
Sources: fly.pieter.com, x.com. Last checked .
