I have a map with many sprites. I could add material to the diffuse shader sprite and then add a lot of light sources. But that will not give me the result I want. And the performance is heavy.
Examples
The first image shows that the light is generated by torches. It expands its light at its best through “open spaces” and stops fairly quickly in blocks.

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Gamedev: https://gamedev.stackexchange.com/questions/155440/unity-2d-shader-lighting-like-terraria-or-starbound
: https://answers.unity.com/questions/1480518/2d-shader-lighting-like-terraria-or-starbound.html