For starters, the game's card art is absolutely gorgeous. The whole game and character designs have this pastel/soft aesthetic going on for most of them, in contrast to the very brightly colored CG, ML and SideM casts. They were the first of the idolmaster games to have animated cards as well, and likely where the other games got this idea from. The card art is very consistent and always breathtaking to see when a new card is released.
Well, where do I even start here... Shinymas isn't a rhythm game, so don't expect to find a lot of music when entering. You can hear short versions of the unit songs during either auditions in produce mode or fes lives, and though they're *very* short versions of the original songs, they're mostly pleasing to listen to. My real gripe with the sound in this game comes with the voice acting and some sound effects. The seiyuus are, for the most part, newbies, and you can hear it in some of their voices. I don't hold it against them, but some voice lines are jarring to listen to, especially some of the oldest homescreen voices. Some sound effects are way too loud, and I usually find myself playing this game on mute when I'm not interested in reading the story.
The gameplay for Shinymas is not for everyone. Being a japanese game, it's hard to keep up if you don't understand everything you're reading, and even harder if you don't understand anything at all. Luckily for me I do have some japanese knowledge, but I believe this game to be harder to get into if you don't know japanese at all. Although, there are various fanmade guides on how to play and a very active Discord server you can go to if you need help.
Other than the gameplay getting repetitive and some produce runs being longer than it should be necessary to, the fes and audition mechanisms can be broken sometimes, which makes the game frustrating to play more often than not. However, when everything goes well, it's incredibly fun and entertaining. Which is why I have mixed opinions on this.
Though I haven't read many stories because I'm only invested in a few characters, the stories that I have read were very interesting and different from other idol series, and different from other idolmaster series as well. The entire shinymas cast is made up of 3dimensional characters, and learning more about them is always a fun and heartwarming experience, if not heartbreaking. They're worth a read.
I haven't actually spent any money in this game, because when I look into something that I'm interested in buying (such as limited outfits, for example) they tend to come in bundles at a high price, which is not what I'm looking for, since as I stated earlier: I'm only invested in a few characters and I'd have no use for, let's say, 5 dress tickets, if I only wanted 2 to begin with.
Prices and bundles aside, it's a fairly generous game, and decently manageable if you're a f2p player. I produce two of the girls in the cast, and so far I have all of their pcards, though sadly not all of their scards. Earning jewels can get hard after you've completed most of the easier missions, and though you get well rewarded for getting True Endings, they're not very fun to do. Overall, they could be more generous.
My final verdict is that this game deserves a chance. As I've said before, it's not for everyone, but you might end up falling in love with it, if only you give it one chance. The cast is very lovely, and the art is worth sticking around for as well.
EDIT: Forgot to mention, but you can play this game on browser, too. It's very useful and generally more pleasing to play on PC than on mobile.
девочки - чудо!