Good game as usual in the series, but I found puzzles way easier than in the 3rd one. Also, having to be entering-leaving the rooms with that animation 24/7 gets a bit annoying after a few hours. Intuitive puzzles with lots of variety, but some of them kinda repetitive or easy to solve since they are so similar to previous games.

I enjoyed it anyway, still be pretty satisfactory when everything 'clicks' and puzzles get solved and you advance to the next step.