According to game creator Richard La Ruina, his upcoming game Super Seducer 3 has been blocked from Steam. La Ruina claims the reason his game is being censored is because it features real actors and actresses rather than 2D art or 3D renders.
While no reason was made public, some have speculated it has to do with suggestive themes. This includes seductive lingerie and a short kissing-scene between two women.
A censored version has since been resubmitted to Steam, but had not heard anything back as of February 15.