Port of Lotte's CRT shader.
This really enhances pixelart!
A tip:
You can use federico's "texellate" shader (has to come first in order before Lotte's CRT), this allows you to keep the low res feel - since this CRT shader requires you to have the game in "high quality" project setting. The texellate effect will make it low res again, allowing fonts and other effects to look good with CRT.