Rise with the nightly migration.
Feed—and return before dawn.
Preparing the ocean…
Reload if loading stallsHeadphones recommended · WASD + mouse
Saving is unavailable. Export a save before closing the game.
Night rises.
Your light callsprey.
Every glow callshunters.
Go dark.
Return before dawn.
Feed. Vanish. Descend.Light · Bite · Dark · Dive deep
Every light leaves a story in the dark.
Tap the swim pad once to cruise. Drag to turn, climb or dive; release and your fish keeps moving. Tap again to stop.
Tap the lure rail to cycle Dark, Dim and Bright, or drag for an exact level. Hold Bite and your fish strikes when edible prey enters range.
Go dark immediately snuffs your lure and cloaks when ready. Pulse draws prey and hunters. Recharge time appears on each button.
Feed in the night. At dawn, return below 200 m to bank your haul. Keep above your crush depth.
Your current haul will be lost. Banked growth stays yours.
Esc pauses · C cinematic mode · progress saves on this browser
Saving is unavailable. Export a save before closing the game.
Your discoveries will gather here.
Tell us what felt good, what got in your way, and whether you wanted another dive.
Progress saves on this browser.
Banked growth, upgrades and discoveries stay on this device. Clearing browser data removes them. Keep a backup to move to another browser or protect your progress; a dive in progress is not included.
Restoring replaces this browser’s progress and reloads the game. Export your current save first if you want to keep it.
Created by Robert Wood. Original ocean creatures and sound effects made for Cold Light.
Music: Abyss Below Ice, created with OpenMusic AI and commercially licensed to Robert Wood.
Rendered with Three.js. Credits & open-source notices · Visit the studio
This beta has no account requirement and sends no gameplay analytics. Playtest details stay in memory until you choose to copy or download a report. Reports include game events, settings and performance, with no email address or device identifier. Hosting providers may keep normal request logs.
Sound and motion can be adjusted in Controls & settings. Cold Light uses a real-time 3D ocean; keyboard, mouse and touch controls are available. Gamepad support is not included in this beta.
The browser temporarily lost the ocean renderer. Cold Light will pause safely and resume if it returns.
Reloading keeps banked progress but ends the current dive.
Check your connection and reload. If this happens again, try a browser with hardware acceleration enabled.
Banked progress stays on this browser. The current dive may be lost.
Contact the studio