Open Stardew Valley
Go to the title screen
Select Co-op
Choose Host New Farm or Host Existing Farm
Load into the game with the first player
Build a Cabin for each additional player
Have the second player join using a controller or keyboard
Set each monitor to extend your desktop in Windows display settings
Drag the game window to the desired monitor if playing in windowed or borderless mode
Use Alt + Enter to switch between fullscreen and windowed mode if needed
In Steam, disable exclusive fullscreen if the game keeps snapping back
Use a local split-screen mod if you want multiple views on separate monitors
Install the mod and follow its configuration for monitor assignment
Set the game to windowed or borderless mode before launching the mod
Assign each player’s view to a different monitor in the mod settings
Match each monitor’s resolution and refresh rate for best results
Restart the game after changing display or mod settings
Ensure each controller is recognized before joining
Use the in-game menu to add more players if the host farm supports it