The Idolmaster: Cinderella Girls

VS

Outriders

The Idolmaster: Cinderella Girls is a long-running mobile/social idol management game launched in 2011. It remains notable in Japan with an active niche fanbase, regular events, and ties to the broader Idolmaster brand, but is well past its peak popularity. Its daily active players are likely in the tens of thousands, supported by ongoing in-game events, but fallen off from earlier years. Not an MMO, as it lacks persistent world and massive real-time multiplayer interactions.

Outriders is a co-op looter-shooter released in 2021 by People Can Fly and published by Square Enix. While it had a strong launch, concurrent player numbers have declined significantly since release. The game is not an MMO, as it centers around instanced co-op play (groups of up to three), not a persistent open world with massive players. Based on trends typical for similar games 2-3 years post-launch, estimated daily active players are in the low thousands across all platforms.