hi , as the title said , what the ways that makes the game lighter , i mean making the game using less processes , thanks
In Unity Pro use the Profiler to determine heavy operations.
Overall don't use more effects than you need, where certain post processes are quite heavy.
Set dynamic shadow distances and resolution to a setting where optimization meet quality - shadows are quite expensive.
Bake lighting and shadows onto textures instead of doing otherwise static operations each frame.
Avoid heavy operations in Update and FixedUpdate, such as finding objects, heavy algorithms and for-loops.
Avoid heavy shaders, especially on several objects in the same scene.
Avoid updating textures to often, this regards SetPixels and having several rendertextures in one scene.
Use the smallest acceptable resolution for textures where optimization meets quality.
Keep more complex meshes around 1500-4000 triangles.
Reuse as much content as possible.
Use Static batching for objects that doesn't move.
Only use Deferred Renderer if you need those particular special features.
Use shared materials.
Compress your content, where textures and meshes makes a difference at RAM usage.
Construct your levels clever where you can cull content that isn't needed (using Umbra or your own technique).
Don't use to many physic objects in one scene.
Cache components in scripting and reference to the cached instance.
Never move a static collider over time.
Keep dynamically created objects to a minimum, for instance remove instantiated debris over time.
Animate heavy operations instead of scripting them. Keep in mind that you can still call functions from animations.