If you have multiple monitors/displays you can override which one the engine puts the fullscreen window into with this launch option:
- Right-click Unturned in your Steam Library
- Select Properties...
- Find the Launch Options field
- Type "-monitor #" without quotes, replacing the index # with 1 for your primary display, 2 for your second display, etc. This is the number shown when you use your operating system's "Identity Displays" feature.
Identifying displays on Windows
You can find the display index # through this menu:
- Right-click your desktop wallpaper
- Select Display settings
- Click the Identify button
- The number shown on each monitor is the display index