How do I properly adjust the game resolution?

Hi guys, I've read a bunch o tutorials and tested all the options but somehow all kinds of layout sizes and configurations end up distorting the graphics of the game.

How can I keep the original 64x64 graphics of my tiles without distorting them? I really don't understand how this works

If your ok to show more or less of the game when changing the window size --> use Crop for the "Fullscreen in Browser".

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