PK XD

VS

Rec Room

PK XD is a child-friendly, social sandbox game released in 2019, available on multiple mobile and desktop platforms. It targets younger audiences and focuses on open-world, persistent social interaction. Based on mobile store rankings, global reach, and ongoing social media activity, it continues to attract a substantial user base, with daily active players likely in the low-to-mid six figures. While not as massive as major legacy MMOs, its persistent social world and open environment qualify it as an MMO by standard definitions.

Rec Room is a long-running social VR and cross-platform game released in 2016. It maintains a large, active audience due to its free-to-play model, strong presence on VR and non-VR platforms (including mobile and consoles), and highly social, user-generated content structure. It regularly reports over a million monthly active users, so an estimate around 140,000 daily active players is reasonable for 2024, though it may fluctuate depending on events and updates.