Scum

VS

Hay Day

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.

Hay Day is a long-running mobile farming simulator developed by Supercell, released in 2012. While its peak popularity has passed, it maintains a sizable, loyal player base due to consistent updates and Supercell's strong mobile presence. It's not an MMO since it lacks a persistent shared world with massive real-time interactions.