Interesting enough, I didn't encounter any bug or exception.
The sex scenes are there, and there are a lot. Maybe not the top quality that can be find in other games, but they are acceptable, especially since the game is at the moment completely free.
The concept is interesting.
But what surprised me is that, mostly, I felt I wasn't using my powers enough (if at all) and that the plot seemed to move kinda on its own.
I tried Psion with the submission aura: the only significant use of the power was spamming telepathy (which was interesting to know what was going behind the scenes) and one time to stop the "antagonist" (no name to avoid spoilers).
Then I tried Mage, and it was even worse, since there wasn't even the telepathy spamming to do.
About the hot scenes, they kinda started on their own, maybe because I talked a lot with the npcs, maybe because my submissive/lust aura influenced them. But mostly they played the same.
I'm going to try a physical guy, next.