This exemple use the 2018 LTS Unity Version (2018.4.20f1)
This game is an example project to use in class for my university, it was asked a simple snake game with score, game over screen, and colliders.
That is my take for this request.
DOTWeen, Post-processing and TextMeshPro from Unity.
This game have a responsive screen, so you can play it in every screen with the 16:10 or 16:9 ratio.