One of the most well made nonogram games currently available, and there are enough puzzles to last you quite some time for a very reasonable price.
As a person who considers herself a "veteran" nonogram player, the "battles" could be a tad more challenging (especially the early ones) but it's not necessarily a bad thing if you prefer a more relaxed gameplay.
It's a bit of a shame that the game is mianly focused around RF5, but it's also not a major issue, and it might have more to do with the availability/willingness of Marvelous to supply the dev with assets (getting more game contents from previous games would have meant that Marvelous had to create some high res assets in the same visual style just for this game and they probably didn't want to bother with that).
Overall, if you're looking for a nice nonogram puzzles game with great graphics and some level of progression/interactivity this game will give you a good bang for your bucks.
Also don't listen to the curators, this is not a bootleg game, it's an official RF game made by an affiliated dev with a great track record of nonogram games. :) They are also behind the Piczle Story of Seasons game.

yep this sure is a puzzle game
uhhhh
if you're just here for rune factory (like i am) there's a music player with a bunch of songs from 3, 4, and 5.

This game is incredible. Piczle knocks it out of the park again with a perfect entry that evokes everything I love about the tie-in property while delivering pitch-perfect puzzles. The quality-of-life features added to this entry are so far beyond what a standard nonogram game has, and a lot of polish has very clearly been put into this experience, making this an absolute masterpiece of puzzle design and UI execution. In short - this game is fun! 10/10, would recommend to anyone, regardless of their mileage with Rune Factory. As long as they're a fan of perfectly polished puzzles, they'll probably praise Piczle as proudly as Pikathulhu!