Using a Sprite Mask to create a flashlight effect
When I was reading about the Sprite Mask on Unity Manual, I questioned my self
"How long does it take to create a flashlight effect using the Sprite Mask?".
The answer is:
less than 2 minutes.
You can check this by watching the video tutorial that I made showing how to add the a flashlight effect to the Unity 2D Roguelike sample project: