Rizline:Disc
In Rizline, a disc is a set of songs. As of Rizline 1.2.6, there are 3 discs in the game:
- Disc 1, with 38 songs, which costs 1
Coin (with some songs additionally costing 
Dots) - Disc 2, with 5 songs, which costs 1 Coin (with some songs additionally costing Dots)
- Disc EX, with 37 songs, which does not cost anything itself, but most songs cost 1 Coin individually.
The disc system was introduced in update 1.0.7 (on 2023-09-01T09:00Z). Before the update, all songs would be shown on one screen, as if they were all part of Disc 1. Since there were no other discs, there was also no UI element at the top of the Rizline:Song select screen to switch between the discs.