Core MUD

VS

PlanetSide 2

Core MUD is a text-based multi-user dungeon (MUD) launched in 1996, when MUDs were popular among early internet communities. Today, almost all MUDs see very low concurrent activity due to their age and the niche appeal. Based on the genre's decline and absence of a major publisher or active social channels, it's likely Core MUD maintains a very small, dedicated player base.

PlanetSide 2 is a large-scale MMOFPS released in 2012 by Daybreak Game Company. Its unique, persistent world and battles with hundreds of players make it a niche but enduring title. Active support and a tight community keep player numbers modest but steady, especially considering its age. Estimates put daily active players in the low thousands, largely split across a few servers.