DayZ

VS

Grand Chase

DayZ is a well-known open-world survival game by Bohemia Interactive, released in late 2018. It remains popular within the survival genre and typically holds a strong concurrent player base, especially on PC with additional activity on consoles. Its age means it's past its peak, but it maintains a loyal community and steady content updates, resulting in an estimated 45,000 daily active players across platforms.

Grand Chase is a well-known side-scrolling action MMORPG originally developed by KOG Studios. Although the classic PC version was shut down in most regions years ago, the mobile relaunch (Grand Chase: Dimensional Chaser) and a Steam version have seen some limited success since 2017. Due to its age, niche appeal, and relatively modest marketing outside its core market (primarily Southeast Asia and Latin America), I estimate its daily active player base to be low thousands. The game does have persistent multiplayer elements and instanced co-op/competitive modes, qualifying as an MMO.