6 - Running the Build Process

With a number of Actors placed and customized, one of the final steps for creating any level is the Build Process.


Marking as docs as the pages have been combined.

By now you may have noticed the "Preview" labels in the shadows and the light leaking under walls.


This is because all the lights in the scene are static and use precomputed, or baked lighting, which has not been calculated yet. The "Preview" text is there to remind you that what you are seeing in the viewport currently is not what you will see in the game.

In this step we will go through the Build process which will build all levels (precompute lighting data and visibility data, generate any navigation networks and update all brush models). We will also take a look at Light Quality settings inside of the Build Options which we can use to adjust the quality of our lighting when it is built.


  1. From the Main Tool Bar, click the down-arrow next to the Build option.


  2. Under Lighting Quality, choose the Production setting.


    This will give us the highest quality lighting but is the slowest in terms of computation time and will increase the time it takes to Build the game. Our level is small, so it should not impact us too much, but keep this in mind when you are working on larger levels as you may want to leave it on a mid-low level setting while creating your level and switching it to Production on a "final pass" at your level.

  3. Wait for the Build to complete.


    You will see the progress in the lower-right corner of the Unreal Editor as seen in the image above.

    Once the Build process has completed, the level lighting will update giving you a better indication of the final result.


  4. From the Main Toolbar, click the Play Button to play in the editor.


    Using WASD to move and the Mouse to turn the camera, you can fly around your level.

End Result

At this point you should have Built the level lighting and previewed your game with the Play in Editor feature. Each of the steps leading up to this point have been aimed at getting you quickly up to speed on how to perform the most common actions when constructing levels inside the Unreal Editor.

In the next step, you will be given some examples of how you can take this sample level and build upon it using the methods that were provided throughout the course of this guide. Also, additional links to more detailed documentation related to the topics covered in this guide are provided which will serve as reference when constructing levels on your own.

Select Skin

Welcome to the new Unreal Engine 4 Documentation site!

We're working on lots of new features including a feedback system so you can tell us how we are doing. It's not quite ready for use in the wild yet, so head over to the Documentation Feedback forum to tell us about this page or call out any issues you are encountering in the meantime.

We'll be sure to let you know when the new system is up and running.

Post Feedback