Is it worth downloading this new version? I use version 1.7.5, does version 2.1 really have new functions and gameplay or still need improvements?
well, more than half of the changelog are just "fixed"
PS: sorry my bad english is not my main language
Compared to 1.7.5, you don't have so much gameplay differences. You will undertake a girl's training the same way. Albeit, the music lessons were remade (so you can't just pick the hardest instrument from the beginning, and there's no more lore-breaking electric guitars). Also, singing was put in the music lessons, and the artist specialization now requires "painting". Some bugs and typos were fixed. And recently in 2.1, there were some nice little post-game amelioration added. All in all, don't expect a whole different game, but this is the best version up-to-date.
The differences are mostly "artistic". 80% the backgrounds were changed, so it gives the game a new visual identity (no more lore-breaking visuals like the bald-angel girl in Serpantine, or TV/laptops in the apartment backgrounds). The musics were changed too.
More importantly, the game is now fully uncensored. And, there are 1500 new sex scenes (before, if you trained a pink haired milf, for example, you only had access to generic pictures that focused on the genital. Not anymore. Now you have at least one picture per sex scenes for each slave).
And if you're being turned down by the last bad reviews accusing the new visuals to be "haphazard" and "replaceable", here is my long
right of reply, which didn't encounter any counter-arguments so far.
Btw do you know whats the song name? I feel quite like this song but its seem too short.
Try your luck with Shazam. Powerairmax who added the songs in previous versions (via Youtubemp3...) had no idea where he got them from, and we had no luck finding the best themes. That's why I just changed everything; at least I'd be sure of the homogeneous orchestration and audio quality.
Edit: Jack-o-nine-tails v2.1/game/content/snd