Runeterra is the setting of all League of Legends games and other media.
So what currently makes up this universe?
Released---
League of Legends (MOBA)
Legends of Runeterra (TCG)
The Ruined King (RPG)
Hextech Mayhem (Rhythm Game)
Arcane (Netflix Show)
Wild Rift (MOBA, Mobile)
Myriad Short Stories, Comics, Cinematics
Unreleased---
Song of Nunu (Adventure Game)
Convergence (Action Platformer)
Project F (Action RPG)
Project L (Fighting Game)
Untitled MMORPG
For a long time the setting was just the MOBA, which itself hasn't been canon to the setting since 2014(?) and even after the setting was mainly made up of short stories, cinematics, comics, and then eventually the Legends of Runeterra card game which has a ton of worldbuilding within it. They announced a lot of these games years ago but now we're starting to see a lot of this stuff release following the critical acclaim of Arcane, the first show set in this universe which just got a second season announcement.
With so much stuff covering such a wide range of genres it's hard to not see this setting just continue to get bigger and bigger. The amount of people I saw who watched Arcane go: "I need MORE of this" was too many to count. And if done well and they build it up enough, then the MMORPG could be absolutely insane in terms of popularity, obviously we can't speak if it will be good but for all the faults of Riot, they do seem to at least let things be worked on for a long long time until they are ready to be released (except League champion balancing I guess lol).
What do you all think? They are clearly trying to do this so I guess the question becomes if this is possible.