# Remember that last year a well-known tweeter called Levelsio published a flight simulator he built with vibe coding? Well, get this! The CEO of Grw AI built a flight simulator that lets you fly over real places around the world!

Machine translation from the original post. Not reviewed by a human translator. Historical claims may no longer be current.

Remember that last year a well-known tweeter called Levelsio published a flight simulator he built with vibe coding? Well, get this! The CEO of Grw AI built a flight simulator that lets you fly over real places around the world! 
And no, Israel is not on the list, in case you were wondering

He wrote in his tweet:
@alistairmcleay
I used Opus 4.6 for the architecture / planning and GPT-5.3 in Codex for the actual implementation
With Opus passing context to Codex

You have to see it for yourselves: https://www.flyover.gg/

I was flying high on it (a pun in Hebrew, "I flew on it", meaning I was blown away, and literally flew) 😜

Original: https://ofershap.github.io/posts/a-real-world-flight-simulator-built-with-opus-and-codex/
Source: https://www.linkedin.com/posts/ofershap_%D7%96%D7%95%D7%9B%D7%A8%D7%99%D7%9D-%D7%A9%D7%A9%D7%A0%D7%94-%D7%A9%D7%A2%D7%91%D7%A8%D7%94-%D7%A6%D7%99%D7%99%D7%A6%D7%9F-%D7%99%D7%93%D7%95%D7%A2-%D7%91%D7%A9%D7%9D-levelsio-activity-7427636677172412416-qESt
Published: 2026-02-12T10:56:22.654000+02:00