itch.io

Technically, yes, but they are not specifically formatted for it. That means you won't be able to paint on autotile terrain like walls and floors. You'll need to place each tile individually.

Also, the tiles are 16x16 pixels on 512x512 sheets. So depending on the limitations of your version of RM, you may need to find a plugin or cut and paste tiles into a smaller sheet. You should do some research into using custom tilesets before picking this up.