Do you find it difficult to explore the ocean depths in Subnautica: Below Zero on a small mobile screen? Tight touch controls can make navigation, resource gathering, and base building feel less precise.

With OSLink, you can mirror your phone’s screen directly to your PC and control the game using a keyboard, mouse, or controller through an emulator. This makes movement, underwater exploration, and crafting far more comfortable.

For players who prefer a larger screen without installing the full PC version, OSLink offers a convenient way to enjoy Subnautica: Below Zero while keeping your mobile progress intact. Below is a step-by-step guide to set everything up.

How to Play Subnautica: Below Zero on PC

1. Install the game on your phone

Open Google Play and search for “Rainbow Six Mobile”
If the game is unavailable in your region, download the APK from a trusted third-party source.

2. Install OSLink on both PC and phone

Visit the official OSLink website and download the app for PC and mobile.

3. Connect your phone to your PC

Launch OSLink on both devices, and log in using the same email.
Connect your phone to the PC using a USB cable.
Select your device in OSLink on your PC.

4.Select “Game Mode” for best performance

When prompted:
Choose Game Mode (USB required).
Tap Start Mirroring on your phone.

5.Enable Developer Options and USB Debugging

If it’s your first time:
In OSLink tap Enable Developer Mode, then follow the instructions:
Go to Settings → About Phone.
Tap Build Number 7 times until you become a developer.
Enter your device password if required.
Search for USB Debugging and enable it.

6.Start screen mirroring

Return to OSLink and confirm.
Your phone screen should now appear on your PC.

Keyboard & Mouse Setup for Subnautica: Below Zero

After mirroring:
Click the keyboard icon on OSLink’s side toolbar.

Open the key-mapping editor.Drag and align the virtual buttons to match the in-game controls. Add new buttons from the panel if needed.

If you prefer, OSLink also supports external controllers, letting you play Subnautica: Below Zero with a gamepad.

Also don't forget to adjust your FPS and resolution depending on your device. 

Important Tips

For the smoothest experience:
Use a high-quality USB cable, ideally USB 3.0 or higher.Avoid cheap charging-only cables that may cause input delay.
In OSLink (mobile) → Mine, you can earn free usage time by watching ads or completing tasks.

Conclusion

Using OSLink to play Subnautica: Below Zero on your PC greatly improves the experience compared to playing solely on a phone. A larger screen and more precise keyboard or mouse controls make exploring frozen oceans, collecting resources, and building underwater bases far more immersive.