Show HN: Lofi Cities – Pixel-art city nights with browser-generated lofi

Lofi Cities is a free web app that pairs looping pixel-art night scenes of eleven cities (Paris, Tokyo, New York, London, Rio, Istanbul, Hong Kong, Sydney, San Francisco, Hamburg and Amsterdam) with endlessly generated lofi music and layered ambient city sounds. Each scene is a 480×270 pixel animation that loops every four minutes, includes weather and landmarks, and can auto‑rotate through cities on a timed tour or follow the night (showing whichever city is nearest 1 a.m.). Users can change weather (rain, snow, autumn leaves, clear), mix individual ambient sounds, save a 1080p PNG frame, export or buy video loops, and use keyboard shortcuts for quick control. Mobile-friendly touch controls, a mini player, fullscreen, Pomodoro and sleep timers, and a simple anonymous “Together” interaction that releases shared lanterns create a background designed for focus, rest or streaming.

All music is synthesized live in the browser with the Web Audio API - chord progressions, drums, bass and melodies are composed on the spot with tape wobble and vinyl crackle rather than samples - so tracks never repeat. A Vibe panel selects styles (jazzhop, piano, ambient, bossa, synth, house, guitar, sad, medieval), mood (chill to upbeat) and arrangement (full band, no drums, chords only). It works offline after one load, can be added to home screen, supports OBS streaming via a URL parameter, offers rentable pixel billboards for businesses, and was created by Safa Elmali.