i've played TEO quest, i like that they based some of the other dolphin birds on different cetaceans. my favorite level was probably hokko hot springs. the geyser mechanics really stepped the platforming difficulty up.
im actually writing a fanfic based on the game, well some of it at least. taking my own creative liberties.
(its called the seven stones if you want to search it up.)
i still think the original is the best though. it has a very chill feeling, its fun to watch the creatures live their life. its a lot different from the usual fast-paced games of the modern world and i think thats what makes it stand out.