How to Record Browser Games with DeviceRec

Capture .io games, web games, and HTML5 games at native quality with no imposed resolution cap. Perfect for YouTube videos, TikTok clips, and sharing highlights.

Install DeviceRec

Add the free DeviceRec extension from the Chrome Web Store. No account needed, installs in seconds.

Open Your Game

Navigate to your browser game in Chrome. Works with Agar.io, Slither.io, Krunker, Shell Shockers, and any web-based game.

Go Fullscreen (Recommended)

Press F11 to play in fullscreen mode. DeviceRec records at your screen's native resolution, so fullscreen gives you the best quality.

Enable Audio

Make sure "Tab Audio" is enabled to capture game sounds. Enable microphone if you want to add commentary.

Start Recording & Play

Click "Start Recording" and start playing! DeviceRec captures everything in the tab without affecting game performance.

Stop & Save

Click "Stop" when done. Your gameplay saves directly to Downloads as a WebM video — ready to edit or upload.

💡 Recording Tip: Disable Smart Zoom for gaming — you want a stable camera. Play in fullscreen (F11) for maximum recording quality.

Why DeviceRec for Browser Games?

Native resolution — No DeviceRec-imposed resolution cap
Tab audio capture — Get all game sounds in your recording
Microphone support — Add live commentary while playing
No performance impact — Recordings happen in a separate process
No watermark — Clean footage is included free
Privacy-first — Your gameplay stays on your device

Popular Games You Can Record

DeviceRec works with any browser-based game:

.io Games — Agar.io, Slither.io, Diep.io, Paper.io
FPS Games — Krunker.io, Shell Shockers, 1v1.LOL
Battle Royale — ZombsRoyale.io, Surviv.io
Casual Games — Wordle, 2048, Cookie Clicker
Flash/HTML5 Classics — Any game that runs in browser

Tips for Gaming Content Creators

Record in fullscreen for best quality (YouTube compresses, so start high)
Record in fullscreen (F11) for immersive footage
Add microphone commentary for engaging content
Export clean, watermark-free footage at no cost
Edit in DaVinci Resolve (free) or your preferred editor

Start Recording Your Gameplay

Completely free. No paid tier, watermark, resolution limit, duration limit, or license activation.

Add to Chrome — Free