In this video I show you how to build a fast, COD-style Night Vision (NVG) effect in Unity using the Volume system. The core idea is simple: I create a Global Volume with its own profile, then I toggle the entire Volume component on/off from a small C# script. That gives you instant switching between normal camera output and the night vision look—clean, efficient, and easy to maintain. I walk through setting up the scene side first (right-click Hierarchy → Volume → Global Volume), naming it clearly (like “NightVision Volume”), and generating a new profile asset. Then we stack the key overrides that sell the NVG vibe: Bloom to amplify bright light sources (I like an intensity around 5–10 depending on your lighting), Vignette to get that goggle edge framing, and Color Adjustments with a strong green Color Filter for the classic military tone. Finally, I wire up a NightVisionController script with the proper namespaces, a public reference to the Volume so you can drag-and-drop in the Inspector, and a boolean flag to track state. Flip the flag, set volume.enabled, done.