Scum

VS

PokeMMO

Scum is a multiplayer open-world survival game developed by Gamepires and originally entered Early Access in 2018. While it is not a full MMO, it supports servers with dozens of players (up to 64 per server). The game maintains a niche but dedicated following and is frequently updated; however, it has never reached large mainstream status. Based on long-term trends of similar survival games, its daily active player base is estimated to be in the low thousands, and this estimate would hold unless a major relaunch or expansion revitalized the player base.

PokeMMO is a long-running fan-made Pokémon MMO that launched in 2012 and has maintained a steady, niche but dedicated player base due to its unique multiplayer take on classic Pokémon games. Despite its age, it still attracts thousands of daily players thanks to regular updates and the enduring appeal of the Pokémon IP. However, as a fan project, it doesn't reach mainstream MMO numbers, but community buzz and statistics from forums/redits suggest daily activity in the lower tens of thousands.