If you are interested in hentai doujinshi feel free to visit Dark Hentai:
http://www.darkhentai.x.pl/html/index.php
I hope you will find something you like there.
http://www.fallout3nexus.com/downloads/top/alltime.php?adult=1 is your best bet, I reckon. Got nothing for Assassin's Creed or F.E.A.R., I'd have to go hunting.
For Fallout 3, I think Fallout3Nexus is the hub for the mod community and you can find all the sexy stuff people've made on there. Otherwise I suppose you can always hammer Google; my copy of FO3 is for PS3, so I don't get any mod fun. Also now in the process of putting up the Metal Gear stuff I have, but there's not a whole lot I'm afraid.
A whole lot of very nice Star Wars stuff you've got here. Only really missing Shaak-Ti as far as I can tell, but it's hard to keep up with the sheer number of girls in the Star Wars universe nowadays.