"Compilation release" refers to a collection of songs or works from different artists or sources gathered together and released as one album or project. Full definition
I've collected several of their classic compilation releases for other consoles and more recently bought used Genesis and Genesis 3 consoles. (8-bitcentral.com)
Sega Ages was a series of retro compilations released on the Sega Saturn back in mid-90s. (wccftech.com)
Sonic Compilation is a video game compilation released in 1995 for the Sega Mega Drive. (archive.org)