Digimon World Dawn/Dusk is/are my favourite game(s) of all time, and the only people I know who know it, know it because I told them about it and told them to play it (those that did enjoyed it).
When it comes to games in this series people always talk about World, World 3, Rumble arena and (since recently, because it was just recently released) Cyber Sleuth.
And these two get ignored despite having arguably the best gameplay in the entire series (haven't played Lost Evolution due to the whole no japanese speaking thing, so I can't really compare it).