Download Article
Learn the shortcut to full screen Undertale on PC or Mac
Download Article
Is Undertale showing up in a small square on your screen? Undertale sometimes opens in a tiny window, possibly to mimic the feel of a retro game. However, if it's a little too hard on your eyes, you can easily force the game to open in full-screen mode. Here's how to fullscreen Undertale on Steam, whether you're using a Windows or Mac computer.
Keyboard Shortcut to Fullscreen Undertale
To make Undertale fullscreen on your keyboard, press the F4 key. Be sure your Function (Fn) key is disabled before trying to use F4. If that doesn't work, try Alt + Enter to force fullscreen mode.
Steps
Section 1 of 2:
How to Make Undertale Full Screen
Download Article
-
Press F4 . If you have a full-sized keyboard, this is in the top row. F4 is Undertale's shortcut to play the game in full-screen mode.
- If you press F4 but the game doesn't change, skip to the next step.
- If you're using a Mac, you can select View at the top and select Fullscreen .
-
2If it doesn't work, press Fn + F4 . Fn is the function key on your keyboard and can be found in the bottom row. This is a modifier key that allows you to use secondary functions on your keyboard. If F4 alone doesn't do anything, try pressing these two keys together.
- Some devices may prevent the use of the F1-F12 keys using the Fn Lock. If your device has Fn Lock active, press Fn by itself, and then press F4 to fullscreen the game. If it's still locked, press Fn and Caps Lock at the same time, and then press F4 to fullscreen the game.
Advertisement -
3Press Alt + ↵ Enter . If the previous steps didn't work, you can use the shortcut Alt + Enter to force your device to fullscreen the active window. Undertale should now be in full-screen mode.
- If Undertale is not in full-screen mode, continue to the next section to troubleshoot your device.
Advertisement
Section 2 of 2:
How to Fix Undertale Not in Fullscreen
Download Article
-
Check your Function key. If you can't use the F4 shortcut, make sure Function is turned off. You can do this by checking for a light indicating the mode, or you can press the Fn key to toggle it. Then, try pressing F4 again.
-
2Check your keyboard. If no other keyboard shortcuts will fullscreen Undertale, it may be an issue with your keyboard. Disconnect and reconnect your keyboard before trying again. If it still fails, plug in a different keyboard and try again.
-
3Check for system updates. Outdated operating software can affect other aspects of your computer. Make sure your computer is up-to-date.
- If you're using Windows, click the Start menu and type "check for updates". Then, click the Check for updates button at the top. If there's an update available, Windows will notify you.
- If you're using a Mac, open the Apple menu and select System Settings . Click General > Software Update > Update Now .
-
4Check for driver updates (Windows). If you're having issues with connected devices, make sure to update your drivers . Do the following:
- Open the Start menu and type "device manager".
- Click Device Manager .
- Expand the menu for "Universal Serial Bus controllers," "Universal Serial Bus devices," and "USB Connector Managers."
- Right-click the device.
- Click Update driver .
- Click Search automatically for drivers .
- If a new driver is detected, follow the on-screen instructions to install it.
-
5Restart your device. After updating your computer or troubleshooting it, you should restart to apply any changes and fix any minor bugs.
-
6Reinstall Undertale. If your keyboard and system are working properly, there may be an issue with the game itself. To fix this, completely uninstall Undertale . You can do this by right-clicking the game in the Steam lobby and clicking Uninstall . Then, install it again from your library or the game's page.
-
Use Big Picture Mode on Steam. If you're playing Undertale on your computer via Steam, you can use the Big Picture mode feature to turn the game full-screen. [1] X Research source This mode is originally intended to work for your TV or a bigger monitor, but it can help force the game into full-screen mode if the shortcut keys don't work. To enable Big Picture mode, do the following:
- Open Steam.
- Click the monitor icon (Big Picture Mode) in the top-right corner.
- Select Undertale .
- Click Play .
- To exit Big Picture Mode , click Steam Menu in the bottom-left corner. Click Power > Exit Big Picture Mode .
Advertisement
Expert Q&A
Ask a Question
200 characters left
Include your email address to get a message when this question is answered.
Submit
Advertisement
Video
Tips
Submit a Tip
All tip submissions are carefully reviewed before being published
Name
Please provide your name and last initial
Thanks for submitting a tip for review!
About This Article
Thanks to all authors for creating a page that has been read 24 times.
Advertisement
