Deltarune, created by Toby Fox, is a captivating RPG that draws players into its unique world. To fully immerse yourself in the game’s atmosphere, playing in full-screen mode can really boost the experience. However, some players face small hurdles when trying to get the game to run in full screen. This article will walk you through all the ways to switch Deltarune to full screen on different devices, so you can get the most out of your gameplay.

By default, Deltarune opens in a windowed mode. That means the game appears in a smaller frame rather than taking up your entire screen. While windowed mode works fine, full-screen mode offers a more immersive experience, especially during battles or emotional cutscenes.
The good news is that Deltarune provides a few easy ways to enter full-screen mode. Depending on whether you’re using a Windows PC or a Mac, the method might vary a little.
For Windows Users
There are two main ways to go full screen on Windows: keyboard shortcuts and in-game settings.
Using Keyboard Shortcuts:
- F4 Key: The simplest way to enter full-screen mode is by pressing the F4 key. If nothing happens when you press it, try holding the “Fn” (Function) key and then pressing F4. Some laptops require the Fn key to activate function keys.
- Alt + Enter: Another widely used shortcut is pressing Alt and Enter together. This shortcut works in many games and older applications too. Pressing it again will usually bring the game back to windowed mode.
Using In-Game Settings:
If you’ve reached the Dark World in the game, you can access the in-game settings:
- Press the pause button to open the menu.
- Navigate to the settings or configuration area.
- Look for the option labeled “Fullscreen” or “Screen Mode.”
- Toggle it on to switch to full-screen mode.
This method is helpful if you prefer changing display settings from within the game instead of using keyboard shortcuts.
For Mac Users
Mac players also have a couple of options to enter full screen.
Using Keyboard Shortcuts:
- Command + Control + F: This combination toggles full-screen mode for most Mac applications, including games like Deltarune. Just press all three keys at the same time, and the game should expand to full screen.
Using the Menu Bar:
If you don’t want to use shortcuts:
- While the game is running, move your mouse to the top of the screen to bring up the menu bar.
- Click “View” from the menu.
- Select “Enter Full Screen.”
This is a quick and reliable way to toggle the game to full-screen without memorizing keyboard combos.
Troubleshooting Common Full-Screen Issues
Sometimes switching to full-screen mode doesn’t work as expected. Below are a few common issues and how to fix them:
- Game Appears Squished or Stretched:
This usually happens because of incorrect display scaling or resolution settings.
- Fix: Go to your computer’s display settings and set scaling to 100%. Also, ensure your screen resolution matches the game’s native resolution.
- Game Runs Too Fast in Full-Screen:
If you have a high refresh rate monitor, like 144Hz or higher, you might notice Deltarune running at an abnormally fast speed.
- Fix: Lower your monitor’s refresh rate to 60Hz while playing. You can usually change this setting in your graphics card control panel.
- Keyboard Shortcuts Don’t Work:
Some computers, especially laptops, require the Function key to activate the F1–F12 range.
- Fix: Try pressing Fn + F4 or Fn + Alt + Enter. You can also check your keyboard settings or software utility if your keyboard has custom configurations.
- Full-Screen Flickering or Black Screen:
Rarely, switching to full screen might cause flickering or black screens due to driver issues.
- Fix: Update your graphics drivers to the latest version and reboot your system. Try running the game as administrator if needed.
Enhancing Your Deltarune Experience
Playing Deltarune in full-screen mode does more than just look better. It helps you focus entirely on the world, dialogue, and music, without desktop distractions. Whether you’re exploring mysterious towns, solving puzzles, or engaging in combat, the full-screen mode makes everything feel more dramatic and alive.
For best results, make sure your monitor’s brightness, resolution, and refresh rate are optimized before starting the game. Also, avoid running too many background apps that might interfere with your game’s performance.