I have played IF before that had three games in one. This is the first time I have encountered one game in three. These games tell three sides of the same story and are in fact impossible to finish without each other. While I see that it could be confusing for someone who stumbles upon just one of them, I had fortunately already noted their connectedness and expected some degree of intertextuality, though perhaps not at such a level.
As for the game(s) [it|them]sel[f|ves] (referred to in singular from here on), I quite enjoyed it! The Knot features a very curious mix of cultural references, including, but not limited to: Nazis, spaceships, magic, alchemy, youtubers, fairy tales, Jabberwocky-type Nonsensish, and several religions, both existing and imagined. For some reason, for me, this mashup works rather well, probably because it actually feels linguistically grounded. The puzzles in The Knot are easy, especially since they are overly clued, which is done in a very funny way, and the whole thing should take no more than half an hour to play.