Nether

VS

Star Wars: The Old Republic

Nether is a multiplayer survival horror game released in 2014 with MMO-like elements. It had a small but dedicated community at launch, though activity dwindled after a few years, especially following management and server changes. The game is now mostly inactive, but a handful of players may still frequent private or community servers. The publisher and developer are not major studios, making sustained high populations unlikely.

Star Wars: The Old Republic is a classic MMORPG launched in 2011 by BioWare and published by Electronic Arts. Although it had a large player base at launch, the numbers have declined over the years, especially since it's now over a decade old and several expansions have come and gone. However, it still maintains a loyal core community thanks to regular content updates and the strength of the Star Wars IP. As an MMORPG, it does meet the MMO criteria with a persistent online world and the ability to interact with thousands of players simultaneously.