I suspect a few of us on this forum are using Unity and the Unity tile system for our 2D pixel art games. If you're one of them, and you've come across Unity's propensity to display gaps between tiles, I've added a free asset to the asset store to sort it out.
https://assetstore.unity.com/packages/2d/textures-materials/2d-tile-gap-fixing-tool-157060This is usually a manual process of surrounding each tile in a ring of pixels that matches the edges of the tile. The asset automates it.
I've seen a number of other quick fixes, but they all have inherent problems, don't fix the issue in all modes, or (in my case at least) stop working after a time.
That's all. Enjoy.
