Begin by downloading the necessary files for the Unity project. Download Unity Hub from the official website and install Unity version 5.3.1f1. Locate and open the downloaded files as a project within the Unity environment.
After creating the project, navigate to the File tab and select the Build and Run option to proceed. Navigate and select Spatial Navigation/scenes/Big City B Lures and Scenes and LaFin. Choose the PC, Mac, and Linux Standalone options.
Then click on the Build and Run button. Click the Graphics tab to adjust the screen resolution and the graphics quality. Then move to the Input tab to modify the game's control settings.
Afterward, simply click on Play button to begin the spatial navigation task.