Stealth Game & Cinematography
Objective: Make the window in the game see-through
To make your window see through is pretty easy, you just need to make your material transparent.
So create a material like normal and change the Rendering Mode from opaque to Transparent.
Then change the other values to create different types of glass characteristics such as partially see-through.
You can then add this material for your glass model to change it as a see through glass object.