It’s unique in that practically everything on ROBLOX is designed and constructed by members of the community. ROBLOX is designed for 8 to 18 year olds, but it is open to people of all ages.

Users of the game creation platform Roblox have long snuck music into their games, but now the music industry is trying to crack down.

Players can customize their own worlds on the platform. Many illegally upload songs — called “bypassing audio” — and some make intense tracks in a new genre, robloxcore.

The National Music Publishers’ Association sued Roblox, seeking at least $200 million in damages for alleged unauthorized use of songs.