Unity
https://gyazo.com/6af7ebf430d0e9ee66fa7b950b099410
GENERAL
Quixel - Unity vs UE4 Engine Comparison
MATERIALS & RENDERING
Deferred cel shading
Optimising graphics rendering
Alloy Physical Shader Framework
Alan Zucconi - Learning Shaders
Unity - Shader Graph Example Library Unity 2018.1
Unity - Spotlight Team Best Practices: Making believable visuals in Unity
LIGHTING
Volumetric Lighting
Raphael Ernaelsten - Aura Volumetric Lighting
Adams Github Volumetric Lighting
Lighting tips & tricks in the ADAM films
Unity - Best Practice: Setting up the Lighting Pipeline
VFX
Gregory Silva - Making Zelda-like VFX with Unity
Ryan Zeng - RzFX Flow Trail Breakdown
TUTORIALS
Unity - Creating Believable Visuals
FOLIAGE
Foliage Optimization
PLUGINS & EXTENSIONS
FBX Exporter
Scene OBJ Exporter
ColourLivers Importer
Unity3d College - Unity3D Extension - Replace GameObjects and Prefabs with Another Prefab
Amplify Creations - Amplify Imposters ($)