sorry, i voted for yes and no (but not "not worth it")
my reasoning is that it's worth owning but maybe not for the price. if you're a fan of puzzle games and are willing to invest a lot of time, then i would say go for it. i got frustrated and looked up a lot of the solutions because i reached a point where i just wasn't willing to spare any more time with some of the more tedious puzzles (like moving blocks around in a square grid). it's still a lot of fun though!