This is a complete Unity game, called Furious Ride.
It is ready for release, and it’s excellent for learning purposes.
Contains Admob and Unity Ads

How to play?

On mobile : Tap and hold your finger on screen to shoot, release to hide.
On desktop/web : Tap and hold mouse button on screen to shoot, release to hide.
Your goal is to destroy all of the enemies.
However, if an enemy shoots you, then the game is over.