Yeah, it's very interactive (True Love).
The cat I picked up, turned into a girl. I didn't saw that coming.
But in True Love you can actually, finish the whole game with just one try.
I also got the GAY ending
I Really Hope some company or some one will Remake "True Love", to the new era.
Well, the Chobits game for the PS2 is pretty interactive, but it follows the original story, so if you made the right choice, you'll just rewatch the whole anime again.
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Chobits:
+ side
-You can change Hideki's name, and Chii can say your new name (like a vocaloid)
-Your free to schedule your plans for the week: study, work, or go outside
-Chii can have different jobs.
- Side
-No original story
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Comic party is also very interactive, and it's hard, I accidentally got Mizuki's route.
-You can create your own doujin (choose it's genre, title, etc)
-Like True love, you schedule your plan daily.
-And you can go to a lot of places.
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Other Games that are
VERY interactive:
-Evangelion: Ayanami Ikusei Keikaku - Asuka Hokan Keikaku
-Mahou Sensei Negima! 1-Jikanme ~Okochama Sensei wa Mahoutsukai!~
-Mahou Sensei Negima! 2-Jikanme ~Tatakau Otometachi! Mahora Daiundokai SP~