Press Alt + Enter to switch the game to windowed mode
Drag the game window to the other monitor
Press Alt + Enter again to return to fullscreen if needed
Use the game’s display settings to select the target monitor
Set the desired monitor as the primary display in your operating system
Use Windows + Shift + Left Arrow or Windows + Shift + Right Arrow to move the active window between monitors
Check the game’s launch options or config files for a monitor selection setting
Disable exclusive fullscreen and use borderless windowed mode if available