free-strip-games.com has one of the biggest libraries of live action strip show games if you like your sex games more realistic, and a little more seductive. There are a lot of free strip games (hence the name!) available, but if you're looking for a more premium experience, you can also sign up for a membership to access premium content.
freegamesexposed.com offers parody sex games of the highest quality, that lampoon some of your favorite games like Grand Theft Auto and Super Mario Brothers.
adult3dgames.com has nearly 400 of the best sex games available on the internet, including super hero parody sex games of blockbuster proportions.
gamcore.com has over 100 categories to choose your favorite adult games from. You'll find a great selection of free hentai sex games, adult parody games, and 3D sex games among others.
sexgames.cc has a more modest selection of sex games than most on this list, but you'll find great original games that are exclusives to this site alone.
adultgamecity.com features 20+ categories of online sex games, with an emphasis on the Hentai variety.
porngames.com has a huge collection of over 400 free sex games in multiple genres, waiting for you to play them.
hornygamer.com with over 12 pages of Hentai & Sex Games available for free, this is a great site for anyone looking for a rougher anime-style gameplay.