World of Sea Battle

VS

Ingress

World of Sea Battle is an indie open-world naval action game with RPG and simulator elements, developed by Thera Interactive. While it features open-world and multiplayer tags, the lack of wide recognition, a major publisher, and mainstream coverage suggests a small but steady niche community. Its indie studio background and limited marketing mean the player base is likely in the low hundreds daily. I do not classify this as a true MMO as there's no clear indication of massive concurrent player interactions.

Ingress is a location-based augmented reality game developed by Niantic and initially published with support from Google in 2013. Although it was popular at launch and influenced later Niantic games like Pokémon GO, its user base has declined over the years. However, it still maintains a niche, dedicated player community. Given its age and the presence of ongoing events, current daily active players are likely in the 20,000–40,000 range.