Puri Para (also known as PriPara) is a series that follows Pretty Rhythm. However this isn't a sequel and the Pretty Rhythm characters don't appear. In Japan you can play the arcade game, where you become a Puri Para idol that aims to be a Divine Idol.
Laala Manaka is a 5th grader at Paprika Private Academy. Laala loves to watch Puri Para TV, but when her best friend Nao asks her if she wants to become an idol, she answers that she doesn't and that she likes to watch them on TV. Laala finds Mirei's Purichike Bag and decides to look for her. Laala goes at Prism Stone, where Meganee tells her that Mirei's in Puri Para. Laala finds her own Purichike and enters the world of Puri Para. Laala gives Mirei the bag, but Mirei asks her to perform together, since her manager Kuma has booked her for a duo audition. Laala and Mirei perform together Make It! and Kuma realizes that she has got the Legendary Prism Voice. Laala returns home. Soon after that, Laala and Mirei start doing many duo lives, and when Laala sees Sophie's show, decides to form an unit with her.
The Puri Para arcade is a game where you get your real-life Purichike and scan it to play with your avatar. It is a rhythm game where you play auditions to win dresses, characters and more. The game is currently avaiable only in Japan.