Optimalization is important, especially when it comes to 2D games which are heavy on resources. At first optimalization doesn't sound as anything exciting or creative but as it turned out it's not quite the truth. I'm still a beginner to optimalization but I want to share the methods I've acquired over the time I've been using Unity. My primary issues so far were always a huge amount of resources that caused my scenes to have a long loading times as well as making the build size quite big. So the goal is to reduce both. Note that this post will be focused on optimazing a 2D game in Unity engine.