Sorry for the noob question but I placed too many items and I can’t remove them. How do I get rid of them?
Apart from the player, every tile you place in pulp replaces what was there before, regardless of it being a world tile, sprite or item. If you want to remove an item, just replace it with any other tile.
You can only place the player once, which is where they will begin at the start of the game, so just move them somewhere else if you want to.
Specifically, you likely have a "white" blank tile as your background. Use that tile to "erase" things.