Deltarune Fullscreen Settings can be a bit confusing for first-time players, especially since the game doesn’t immediately present a fullscreen option when launched. If you’re trying to switch to fullscreen mode and can’t find the setting, don’t worry—this guide will walk you through the exact steps to enable fullscreen on PC, Xbox, PlayStation, and Switch after starting the game.
Whether you’re looking to improve immersion or optimize performance, toggling fullscreen in Deltarune is a simple process once you know where to look.
Can You Play Deltarune in Fullscreen?
Yes, Deltarune fully supports fullscreen mode on all platforms. However, the fullscreen option does not appear immediately when you first start the game. Instead, players must reach a certain point in the game before the full settings menu becomes available.
Until then, the game runs in windowed mode by default. There is no traditional “settings” option on the initial title screen that lets you toggle display options.
How to Unlock the Full Settings Menu in Deltarune
To access the fullscreen toggle and other advanced options, you need to progress a bit into the story.
Step-by-Step Guide:
Start the game as usual and proceed through the initial dialogue and introduction.
Continue playing until Kris and Susie enter the mysterious world—this usually takes around 10–15 minutes of gameplay.
After reaching this point, open the in-game settings menu using the platform-specific key:
PC: Press CTRL
Xbox: Press Y
PlayStation: Press Triangle
Nintendo Switch: Press X
In the newly opened menu, navigate to the right side and select “Config”.
Within the Config settings, you’ll find the option to enable Fullscreen Mode. Toggle this to switch between windowed and fullscreen.
This menu also contains other customizable settings such as volume controls, visual effects, and input preferences.
Fullscreen Settings on PC
If you’re playing on PC, the CTRL key is your access point to settings. Once inside the Config menu, enabling fullscreen will immediately switch the display to fill your entire screen.
There is no need to exit the game or modify config files manually—everything can be done from within this menu after reaching the correct story point.
Tip: If fullscreen doesn’t activate properly, try pressing ALT + ENTER to force windowed-to-fullscreen toggle (works on some versions).
Additional Display Settings in Config Menu
In addition to fullscreen mode, the Config menu lets players adjust:
Master Volume
SFX and Music Levels
Control Mapping
Border and Color Effects
Auto-Run and Battle Speed
This ensures a more personalized experience once the full settings become available.
Why Fullscreen Option is Locked Early
The fullscreen toggle being unavailable at the start is likely a design decision by Toby Fox to maintain control over the opening scene presentation. Once players enter the Dark World with Susie, the game “unlocks” and allows more customization.
This delayed access can be surprising for new players, but it also helps maintain a focused intro sequence without distractions.
Final Thoughts
Enabling fullscreen in Deltarune may not be straightforward at first, but it becomes easy once you reach the right point in Chapter 1 or 3. By opening the settings menu with the appropriate platform key and navigating to the Config screen, you can toggle fullscreen mode and tailor the experience to your preference.
Whether you’re playing on PC or console, taking advantage of Deltarune’s fullscreen settings helps create a more immersive and comfortable gameplay session.