How to full screen undertale on pc?

How to full screen undertale on pc?

Undertale is an award-winning indie game that has captured the hearts of players around the world. However, one common issue that many players face when playing Undertale on PC is that the game does not automatically launch in full screen mode. In this article, we will guide you through the steps how to full screen undertale on pc?

Step 1: Check your monitor resolution

The first thing you need to do is ensure that your monitor resolution is compatible with Undertale’s full screen mode. Undertale has a minimum resolution requirement of 640×480 pixels. To check your monitor’s resolution, right-click on your desktop and select “Display settings”. Under “Display resolution”, check the resolution of your monitor. If it is less than 640×480 pixels, you will need to upgrade your monitor or play Undertale in windowed mode.

Step 2: Launch Undertale in windowed mode

If your monitor resolution is greater than or equal to 640×480 pixels, you can proceed to launch Undertale in windowed mode. To do this, locate the Undertale shortcut on your desktop or in your Steam library and right-click on it. Select “Properties” and click on the “Set launch options” button. In the launch options field, type “-windowed” (without the quotes) and click “OK”. Now launch the game as you normally would.

Step 3: Switch to full screen mode

Once the game has launched in windowed mode, you can switch to full screen mode by pressing the “Alt” and “Enter” keys simultaneously. The game should now switch to full screen mode, allowing you to play the game without any distractions.

Step 4: Adjust the resolution

If the game does not appear in full screen mode or if the resolution is incorrect, you can adjust the resolution manually. To do this, go to the game’s options menu and select “Video”. Here, you can adjust the resolution to fit your monitor. It is recommended that you use the native resolution of your monitor to ensure the best possible graphics quality.

Step 5: Save your settings

Once you have adjusted the resolution, be sure to save your settings before exiting the options menu. This will ensure that your settings are applied the next time you launch the game.


Playing Undertale in full screen mode on your PC can greatly enhance your gaming experience, and it is a simple process that can be done in just a few steps. By following the steps outlined in this article, you can enjoy Undertale in all its glory without any distractions. Whether you are a seasoned player or a newcomer to the game, playing Undertale in full screen mode is sure to be a memorable experience.

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