That said, I'll call out two that do it pretty well.
What a Legend is a game with a lot of humor that doesn't take itself too seriously. It's harem, but the main character is a sweetheart, and it's working so far. That said, there are a lot of women in the game, and we've only gotten serious with a few of them up to the current release. I have a lot of faith in the developers, but I suspect that, as we add romantic entanglements, the excuses for why it's okay will start to stretch credibility. The game is so high quality, though, that I'll most likely turn a blind eye to that and still enjoy it.
Mist is kind of a mixed bag with strong highs right beside deep lows. The writer thought through the harem aspect of it, and it works, but, as of the time I played it, it was only with 3 women.
So, I guess my takeaways are:
1) small "harems" can work
2) if there's enough quality in the rest of the game, developers can get away with more on the "harem" front
Tlaero