Animo seems to have used the following strategies:
1. He released the horse with genitals mostly for teasing (which is not a bad idea), but without any genital animation. It stays as it is.
2. The horse is rideable mostly for bug reports.
3. He left the horse animations out, just to make everyone wanting them even more especially after seeing the horse with genitals, which translates to more anticipation (and more supporters).
4. He added a secret just to keep the user interested enough to replay the same game again.
Episode 1 has been re-released mostly for testing, is more like an excuse rather than an actual new release.
It is experimental and buggy, lacking any substantial game progression, resulting in a rather dull experience if you played this before.