The First Day of My New Life is a transformation game created in the Inform 7 engine by Birion.
As I woke up this morning, I felt something was amiss. The room seemed unusually large and I kept leaving my slippers behind. The toilet visit should have been telling, but it wasn't until I was in the middle of brushing my teeth, gazing idly into the bathroom mirror, that I suddenly realised.
I was a girl!
It's simple chioces that give you too options, it's a complete, many branched CYOA that's very well written, two things that are quite rare on this site.