"Erotika" by A&S Soft (more from this author)
Style: (more or less) Interactive fiction
Today you would call this German game an interactive movie. But
it's more of a mixture between a slideshow and a text adventure.
You're some sort of private eye in the future and must defeat an
army of zombies and their leader. You'll also meet cute girls. ;)

"Erotika 2" by A&S Soft (more from this author)
Style: (more or less) Interactive fiction
Second try. Not that different, not that much better. :)
The key to the copy protection is 210665 btw. This time
you start in a ski hut with a blonde next to you. Right.

"Erotika 3" by A&S Soft (more from this author)
Style: (more or less) Interactive fiction
Ok. Now it's 2034 and you're in Mafia controlled
Manhattan. Kill the godfather. Piece of cake.

"Fantasy Girl" by A&S Soft (more from this author)
Style: (more or less) Interactive fiction

"Farmer's Daughter" by Nocturnal Software (more from this author)
Style: (more or less) Interactive fiction
Actually, this is one of the better text adventures with tricky
riddles. Uh...too hard for me sometimes but I did like the game,
despite the lack of porn pics. (PS: Walkthrough here ;)

"Fick Dich Selbst" by Breit Night (Jack the Rapper & Mr. Joker) (more from this author)
Style: (more or less) Interactive fiction

"Fuckgame" by SSC (more from this author)
Style: Joystick lover
There's also a slightly different version from the
ESI / UCF war. I don't know for sure which was first.

"Fucking Fiona" by Rotec (more from this author)
Style: Joystick lover
The game uses pics from Party Girls (or vice versa) and is supposed
to be a demo but we haven't been able to find a different version.

"Fuckman" by SGL and GAA (more from this author)
Style: Lots of action
You have to guide Freddie to his beloved Lolita. No,
actually you have to guide him into his beloved Lolita.

"Funny Girls" by Mickey Mouse (more from this author)
Style: Joystick lover
*sigh* Games like this one lead to frustrated women I tell you! You just
hack away at the F7 key to bring your partner to orgasm. As if it was
that easy! If you're too slow she won't make it and you won't be able
to keep it up. If you're too fast... I bet you know what happens. ;)