I may have fast forwarded about 80% of the dialogue, but the story isn't great, neither are the 10 or so minigames. One gives carpal tunnel, the other is one of those instagram ad games running into numbers. That one is actually not that bad, but this is not a good game.
Edit: OH. The only good minigame is an actual phone game. Here, play this instead: Hatsune Miku Amiguru Train

A cute wrapper for some mobile game ports. A fun time but one that only lasts maybe an hour, so absolutely not worth £20 but it's still a good but brief time.

Minigame/Mobile game port collection. It's fine, If you want it wait til it drops in price

I’m so happy they made a decent random miku game. Finished in 3 hours but still enjoyed