You can get the latest version on patreon (www.patreon.com/vilelab) or subscribestar. The version you downloaded here is the free version. The lastest update it has 3-4 times more content.
We just made the following versions available at lower tiers:
Indecent Desires - the Game - v.006 released for $5 on patreon. Enjoy!
https://www.patreon.com/posts/29690606
Indecent Desires - the Game - v.005 released for $2 on patreon. Enjoy!
https://www.patreon.com/posts/28100373