Competitors There are a few competitors out there that do something very similar (see https://ruttl.com/, https://usepastel.com/, https://bugherd.com/, https://www.markup.io/). This seems to suggest that there seems to be a general market for such a product. Source: about 1 year ago

Yes, we used Pastel https://usepastel.com and it was very nice overall. - Source: Hacker News / almost 2 years ago

If you like Pokémon, you might want to give Temtem a try. It's very similar in play because you collect creatures and bring them to fight other players. This used to be a PC title, but recently ported to consoles. Source: over 1 year ago

Hi r/NintendoSwitch! We're a handful of members from the Crema team. After a couple of years of Early Access, our project, Temtem, an MMO monster-taming experience, is ready to launch worldwide tomorrow at last on Nintendo Switch! Source: almost 2 years ago

Hi r/games! We're part of the Crema team. We've been working on Temtem, an MMO monster-taming experience, for some years now. It's leaving Early Access and launching tomorrow on Xbox SXS, Switch, and reaching 1.0 on PS5 and Steam. Source: almost 2 years ago

Obviously it's not the Pokemon IP, but check out TemTem[1]. The world feels much more alive and they've implemented raids, PVP, and other MMO features. [1] https://crema.gg/games/temtem/. - Source: Hacker News / about 2 years ago

As an aside, have you considered playing Temtem? It describes itself as a massively multiplayer creature-collection adventure. Even in its Early Access state, Temtem delivers a bunch of features listed here. Source: over 2 years ago