Here is the brief sequence:
(a) Delete materials, scenes, 3D game objects.
(b) From the file menu click New Scene. Save As ‘Game’
(c ) First player object? Right-click in the Hierarchy pane, Create Empty ‘cube’ and give it a name ‘Player’ in the Inspector when ‘Cube’ is chosen in the Hierarchy.
(d) Add a Material folder to the Project pane. Left-click and Create a material to the Material folder. Naming? place and underscore ‘_’ to join words: ‘Player_mat’.
Material folder containing one Player_mat
al•be•do /al’bēdō/ noun Astronomy “the proportion of the incident light or radiation that is reflected by a surface, typically that of a planet or moon. (Google search)
(e) Click on Albedo to view the color palate and decide for the ‘Player_mat’s albedo. Drag the ‘Player_mat’ in the Project pane to the Player object in the Hierarchy pane.
Choosing a material’s color
(f) Change the background color.
The opening blue background color material for the Main Camera
What is needed for this space 2D background is a black from the starting 3D Skybox blue. Click on the Hierarchy camera. Set ‘Clear Flags’ from Skybox to ‘Solid Color’ and pick a black.
Creating a black Solid Color for the Main Camera
(g) Position Player to game starting position (0, -3, 0) down to shoot up. Adjust Player_mat color again, contrast with background.
(h) Adjust light shining. Click on Directional Light in Hierarchy. The Inpector’s Light’s Intensity can be increased to shine bright onto the Player object.
Adjusting the intensity of Direction Light from 1 to ‘2’
Save project
Scene view after changes