Yes. It is another of Jupiter’s almost identical picross games. And yes, it is even longer than the previous ones I played. And yes, I will be buying Picross S5 when I see it on sale. What are you implying?
There’s nothing new in this one, apart from all the puzzles being new of course. What I mean is there’s no new modes or mechanics or anything. It does have some huuuuuuge bonus puzzles if you have save data from earlier games in the series, and a couple of those took me over an hour each!