hi Willem,
yes I was reading Tsyu's docs, both level format and level pack format. It looks like it mentions mods only in the level pack format doc so I'm thinking one can't use the xmas mod for just 1 level.
I know one can do it with music where one can override the levelpack.ini one for just 1 level, which does state this in the level format doc.
I also wanted to use the xmas mod for just 1 level in the past but was not able to do it.
I wish Tsyu would come online once in a while so we could ask him about this, so maybe he could update Superlemmini to work for this if possible.
Even when one puts the mods = xmas inside just the 1 level.ini, it ignores this unlike the music = musicfile inside the 1 level.ini