Well the 3DS has been out for a little less than 3 years now and has become the top selling video game system across the world since it's price drop and since the release of the 3DSxl.
 
One of the first comments made by developers was, "3D.. 3D boobs.. Yes please" or something like that....
 
Boob physics is nothing new to videogames DOA (dead or Alive) and other fighting games have been pushing it for years and while Nintendo has had it's fair share of.. Questionable sexually oriented games in the past on the DS very few were released outside Japan. Since the release of the 3DS however physics and more.. umm contriversal games have not only "Developed" (pun intended) but have olso found their way bouncing into the western market. And most of these games have been really well dome and fun games to play. Other games have still been considered to "Japanese" to find a foothold outside Japan.
 
While there are different veiws on the subject mater that is being portrayed in these games (regardless of who's making them), they bring more sales and larger variety of games into the market for adults on a system that has garnered a reputation of being for children and has had many of it's older teen and adult titles overlooked for years.
 
So just to give and Idea of just how many of these games have been release since February 26, 2011 here is a list:
 
Code of Princess (while not as overthe top as other games on this list, this side scrolling beat em'up's main character as well as many other female characters in the game is pure eye candy. And the game often pokes fun at it's self for that... Good news is.. the game is a lot of fun.)
 
Fire Emblem: Awakening (When a game adds DLC with a content just to show off it's main characters in bikini's for both male and female characters, you know they are trying to use sex appeal.)
 
Shin Megami Tensei IV (Though the main characters are nothing to look at the demon fusions yeild some interesting results and they have bios to explain every bit of their looks.)
 
New Love Plus (full on dating sim that when released in japan left thousands of buys having videos of them getting taken and posted of them on YouTub of their hard fought efforts to try and look up their digital girlfriends skirt. But actually a really good game and not that easy to get a girl to like you... too much like real life ;))
 
Conception II (A really good JRPG coming out next year in the west which is part dating sim and part dungeon crawler... but the whole point of the game is to get your sexy classmated to have your children so you can use them in battle. That includes male and female classmates.)
 
Dead or Alive: Dimensions (other fighting games) (These may only fit loosely here but a lot of fighting games like DOA have made their female characters more and more sexuallised and have added more elements to make them more appealing. IN the 3DS version of DOA you can take pictures of the characters from all angles..)
 
Exstetra (Another JRPG but the main theme of this one is the way you gain power... "You have to kiss the girls.")
 
Hakuōki 3D (this game is actually a visual novel for girls and is also released in the west. it has a lot of sexual themes for both girls and guys.)

Senran Kagura Burst (in this side scrolling beat em' up you play it as much of a "dress up sim" as you do a fighting game. But the main catch here is that your life bar is directly tie to your cloths.. the more damage you take the less your cloths stay on. The "female" creator of this game said it was a game sh had been wanting to make for a while and the thing about it.. it's a really solid game and worth playing.)

Colors 3D (while this isn't a game but a drawing app, it is completely uncensored by nintendo and once you sign into the sight with your age approved you can veiw and post adult content pictures.. as long as it is approved to be actual art)

Moe Moe Daisensou Gendaiban 3d ( a turned based stratagy game of sexy female chiby characters that... well blow stuf up..)

If i were traped in a room with a girl i would probably XXX (I's an escape game... you're in a room with a girl who has nothing on but a towle...? I'm not so sure about this escaping thing?)

Ages of Amazones (You're a female prision gaurd trying to get to her ship before the other prisinors on a prision planet of all female prisioners do... and yea.. once you defeat each prisioner you have to interegate them by.. rubbing them?)

Toshin Toshi (So.. in this game you are a figter with a female figting companion.. you fight against other Male fighters with female companions.. each time you beat one you earn the right to... um date the female companion where you have to impress them enough to have them fall in love with you and they will give you their combat skills which you then teach to your female companion privately...."

Persona Q The first persona game outside of the sony system... can we see where this is going? MH.. anyone? Anyways it combines the stories of Persona 3/4 sort of in a chibi-ish world.. no telling where this will go!
 
 
So That's it for now but I'm sure if we give it a day or two they will announce many more.