Hi,

I am new to PICO-8 and still figuring things out...
I know how to set a transparency color for my sprites but it only works when using graphic functions at runtime to display them, not when I place them directly on the map inside the map editor. Am I missing something ?

Thanks,
m.

Nope, you don't miss something, that's correct. You simply can't stack more than one Tile at once on the Map-Editor; the Map is just one single Layer. If you place a Tile inside the Map-Editor, you simply overwrite this Tile.

But when you draw those map tiles at runtime, the transparency is taken into account.

Ok I now understand, the transparency is taken into account, but since the background is black... it shows black.
So I have to set manually a background color when designing my tiles

Or you can use the `cls' function to clear the screen to a color before drawing the map.