Hook has been on my radar for a while. A student of mine showed this to me a while ago. The object is to tap on the black dot various times to withdraw the crossed swords without the swords getting hooked.
What could be better: The lines could be thicker and easier to read. How about giving color to some lines?
There are 50 levels and I did them all. (I'm so glad that there are 'only' 50 levels. Too many puzzle games have too many levels. You may recall the puzzle app that has 10,000 levels.) I like this game. Bravo Maciej Targoni for coming up with an original concept. Hook is definitely a candidate for a PAGY award.
(There's a clone version called Solve The Knot which is a complete rip-off. Yes it's free, but you'll pay for it by having to watch the same ads over and over.)