Everyone who could ignored or forgot that topic with exclusively free games. Unfortunately! But I'm very pleased that you remember that advice, honestly it's nice, because here almost no one listens to anyone.
But if you're interested, yes, i tried that game first, and it's really a full game, it's a jigsaw puzzle, each assembled image also gives a page of a story, so several sections of the game give several stories from different authors and artists.
Plus there are additional puzzles in the game, and there are also achievements in the game.
In general, it's hard to surprise with a game about assembling puzzles, so if you like the process, then it's worth adding to your library, Although for example I don't really like puzzles of non-standard shapes, so for me this is a minus (there is one puzzle almost entirely made of rectangular sections, I think that for this you should be kicked out of the game dev forever), plus the music gets annoying over time. But I think I'll collect all my wishes and whinning into one thought later and write to the authors directly on the game forum.