How to Make Undertale Fullscreen

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Undertale, the beloved indie game developed by Toby Fox, has garnered a massive following since its release. While the game's unique mechanics, engaging story, and memorable characters have contributed to its popularity, players often seek ways to optimize their gaming experience. One of the common requests is how to play Undertale in fullscreen mode. Here's a comprehensive guide on how to achieve fullscreen mode in Undertale.

1. Launching Undertale in Fullscreen Mode

  • From Game Menu:

    • Start Undertale from your game library or desktop shortcut.
    • Once the game launches, navigate to the settings or options menu within the game.
    • Look for a fullscreen or display settings option.
    • Select fullscreen mode and apply the changes.
    • Restart the game for the changes to take effect.
  • Using Command Line or Shortcut Parameters:

    • Locate the Undertale executable file or shortcut on your computer.
    • Right-click on the executable or shortcut and choose 'Properties'.
    • In the 'Target' field, you'll see the path to the executable. Add '-fullscreen' at the end of this path.
    • The modified path should look something like this:
      "C:PathToUndertale.exe" -fullscreen
    • Click 'Apply' and 'OK' to save the changes.
    • Double-click the modified shortcut or launch the game from the modified executable to play in fullscreen mode.

2. Adjusting Screen Resolution

Sometimes, the default fullscreen mode may not match your screen's native resolution, leading to black bars or stretched visuals. Adjusting the screen resolution can help optimize the fullscreen experience.

  • Windows:

    • Right-click on your desktop and select 'Display settings' or 'Screen resolution'.
    • Choose a resolution that matches your monitor's native resolution.
    • Apply the changes and restart Undertale to see if the fullscreen mode fits better.
  • Mac:

    • Go to 'System Preferences' and select 'Displays'.
    • Choose a resolution that matches your monitor's native resolution.
    • Restart Undertale to see the changes.

3. Using Third-Party Tools

If the built-in options don't work or you're looking for more customization options, third-party tools can help.

  • Borderless Gaming:

    • Download and install Borderless Gaming from its official website or trusted sources.
    • Launch Borderless Gaming and add Undertale to its library.
    • Start Undertale from Borderless Gaming, and it should launch in a borderless fullscreen window.
  • Custom Resolution Utility (CRU):

    • Download and install CRU from its official website.
    • Run CRU and select your monitor from the list.
    • Add a new resolution or edit an existing one to match your monitor's native resolution.
    • Restart your computer to apply the changes.

4. Common Issues and Troubleshooting

Fullscreen mode can sometimes come with its set of issues, such as black screens, crashes, or display glitches. Here are some troubleshooting steps to resolve common issues:

  • Update Graphics Drivers:

    • Outdated or corrupted graphics drivers can cause display issues.
    • Update your graphics drivers to the latest version from the manufacturer's website.
  • Compatibility Mode:

    • Right-click on the Undertale executable or shortcut.
    • Select 'Properties' and go to the 'Compatibility' tab.
    • Check 'Run this program in compatibility mode for' and select an older version of Windows.
    • Apply the changes and restart the game.
  • Check Game Files:

    • Corrupted game files can lead to issues with fullscreen mode.
    • Verify the integrity of game files through Steam or your game launcher to fix any corrupted files.

Playing Undertale in fullscreen mode can enhance the gaming experience by immersing players in the game's world without distractions. Whether you prefer using built-in options, adjusting screen resolutions, or relying on third-party tools, there are various methods to achieve fullscreen mode in Undertale. By following this guide and troubleshooting common issues, you can enjoy Undertale in fullscreen mode and dive deeper into its captivating world.

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