为什么当我按“播放”时游戏场景为空？

Question

I'm trying to open up a game demo from my class to see what it looks like, but after opening up the project in Unity, going to the "Game" tab on the upper part of the screen, and pressing "play", nothing shows up. I'm new to Unity so I have no idea why the screen is blank (there should be a title screen that says "Traffic Jam" and a play button). I'll attach a screenshot of my workspace below. Thank you in advance!

Note: I read somewhere about changing the "Layout" dropdown option in the upper right corner to "Default", but even if I do that, the title screen doesn't show up correctly.

Here is a link to the project if you want to try it out yourself: https://drive.google.com/file/d/1ekXt948b612dmyT1AZReUOuzh2XbnSDG/view?usp=sharing

UPDATE: I've now opened the scene and have all the objects displayed, however some things still don't seem to be quite right. The title of the game is not shown when it should be and although the "play" button is shown, clicking on it doesn't get the game started as it should.

Answer 1

You should open the scene you are highlighting, by double clicking. You can also open the unity project by double clicking the scene directly from windows explorer.

When unity has opened that scene, this is what you will see.

And this will then be your game view:

This is what happens when I click play and die.

Answer 2

After opening a Unity project, ensure you are also opening the correct Unity Scene. Most Unity project usually contains multiple Scene files which will have different contents.

I can see in your Project tab that you have a Unity scene file which is not currently open, if you double click this it should take you to your scene.

I can tell that this is not open as the Hierarchy would show the name of the currently open scene instead of 'Untitled'.

If this file does not contain the items you are looking for you should check other folder in your project for Unity scene files (did you save it as something else?)