Stellar Incognita is a sci-fi visual novel with multiple branching paths and endings, built around the central themes of mind control and corruption, with some transformation scenes.
The year is 3922 and humanity is colonizing the vast reaches of a wild and unknown space, known as the STELLAR INCOGNITA. You play the role of Sagacious-6, a nefarious and opportunistic clone worker that researches forbidden technologies for mind manipulation and corruption, in order to seek a life of indulgence and self-satisfaction. Set on a mission of revenge at the outset of the story, what fate awaits Sagacious-6 in the STELLAR INCOGNITA?
No Mac version but ran fine in Ren'Py 8.0.3 launcher. I'm glad I went to the effort as it has some really hot scenes.
Download link missing. Also, discussion thread links to Hypnopics Collective rather than TF Games Site.