We’ve all played the game of converting a famous mainstream movie into a porn movie, thus giving us such gems as Shaving Private Ryan, Star Whores, Bi-tanic, The Porn Identity, Das Booty, Forrest Hump, and so on. Some of those, if not all, probably exist.
But why limit it to movie titles? Why not video games, like:
Got any other ones, folks?
Glad-he-ate-her
Painscape: Torment
Skyrim… job
The Secret of Monkey Ass Land
Deus Sex
Womb Raider
Cock Star
Call of Booty
Been done. (Link is to IMDB, and is safe for work.)
Super Mario’s Hos
Pole Position 69
Guilty Rear
Metal Rear Solid (starring Really Solid Snake)
Pokeman: Gotta Tap 'em All!
World of Whorecraft.
Glans Theft Hot Ho
Medieval: Total Whore
Stim Titty
Penis Her, General
Turd Reich
VAG Planets
Alone in the Dark
NM, didn’t see it above.
Croch It and Spank
Assbandit’s Creed (I’m the first to post this? It’s Argent Towers’ favorite thing to call it since he hates the game so much.)
The Bondage of Isaac (For the BDSM types.)
Sexatron
Skyrim doesn’t even really need a change, just set it on an airplane.
Dong
Altered Bestiality
Slow Lick The Hedgehog, starring Ron Jeremy
Cum-Bert
A few classics:
XXX-Com - Enema Unknown (bit of a niche product)
Analization I & II, and the spinoff Colonization
Master of Uranus
Swords of Quim, Darkside of Quim
QuimCity
King’s Panty
And more modern ones:
The Bitcher (actually, that could well describe the first game 
)
Nights of the Old Republic
Animal Crossing (ewwww)
Spurt
The Whores Unleashed
God of Whores
Smegmaman
Poon Patrol
Whores of Neverwinter
Face Invaders
Mr. Do!
(Seriously, I don’t think that one needs editing! :p)