A multiplayer browser flight simulator famously vibe-coded in a weekend with Cursor and Grok 3 — now a full open world with other players, planes and chaos, reportedly earning thousands per month.
Fly, Pieter is the viral multiplayer flight simulator that started as a weekend vibe-coding experiment built almost entirely with AI tools (Cursor + Grok 3). Fly around a persistent open world, meet other players mid-air, try stunts, or just cruise above the clouds. It became one of the most famous proof-of-concept stories of the AI game dev era and kept evolving with community-requested features.
A Command & Conquer style RTS built by Simon Willison almost entirely with Claude Opus 5.5 and Claude Code: skirmish, Last Stand survival, daily ops, an eight-mission campaign and AI-vs-AI matches, with fog of war and 3D models generated fully in code.
A cute 3D farming playground where you play a chicken: collect golden eggs, hatch chicks and explore a bright, chunky low-poly farm with classic WASD controls.
A Ray Vibe Awards honorable mention: rover racing powered by the setting sun — fast, smooth momentum in a gorgeous low-poly desert as daylight fades.
Cozy Aquarium is a free idle aquarium simulation playable in the browser and on mobile, with no sign-in needed. You begin with a single bubble and build up a pond or river filled with fish, frogs, turtles, crabs and plants.
A free procedural driving game built with Three.js, where you cruise endlessly through generated hills with a day-night cycle and changing weather.
Pirsch is a dark fantasy card game in which you place beasts on three trails, flip cards and fight. It runs free in the browser without an account.