The Idolmaster: Cinderella Girls

VS

Star Trek Online

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.

Star Trek Online is a long-running MMORPG first released in 2010 by Cryptic Studios and published by Perfect World Entertainment. Though past its peak, it maintains a loyal niche player base due to consistent content updates and the enduring popularity of the Star Trek IP. The game continues to receive seasonal events and new content expansions, but active daily player numbers have gradually decreased over the years, typical for most MMORPGs over a decade old.