The protagonist's father makes a deal with a devil. Shortly thereafter, a succubus visits the hero's home. She was there to fulfill his father's contract. However, she falls in love with our hero at first sight, and decides to live with him and his sister-in-law instead. Soon the succubus' mother comes knocking, and even she wants to move in on the action! Of course, being succubae, they need to get laid once in a while to keep going--might as well give them what they want!

1,200 years after the Demon King Arawn was sealed, a priest of the "Holy Empire" conspired to free him, using the young oracle Riannon as a sacrifice.

However, the appearance of Riannon's brother Arthur, striving to save his sister, put his plan in peril. In the ensuing chaos, by a twist of fate, Arawn is unwittingly released by Riannon.

So begins their tale...

I'm Kouta Koikawa, and I'm having a problem with my studies. It's not that my classmates' ruckus bothers me, I sit at the front of the room to avoid their antics. The real problem is my social studies professor, Chieri Hase. From the day she started teaching here I haven't been able to keep my eyes off her! She's a rookie teacher, but I'm captivated by every movement of her beautiful body. I can't work up the nerve to confess my feelings - I'm her student, after all, and I'm sure she wouldn't find this sort of forbidden love to be proper... until one day when fate brings us together in an encounter that changes our lives forever.

Snow drop is a beautiful European herb known for bearing nodding white flowers that often appear while the snow is on the ground, despite the cold of winter around it. Filled with symbolism of "hope" and "consolation," the beautiful flower is the central theme in Snow Drop, the romantic wintertime bishoujo adventure from Peach Princess!

You are Minoru Sasazuka, age 19, a bit of a dreamer with a difficult tendency of not being able to make decisions when your heart is involved. A normal Japanese boy, trying to get into college, you've got a handsome physique that should make you popular with girls, but your occasional penchant for romanticism drives them away.

Invited on a winter dream ski trip with a group of friends, you head for a ski lodge for some winter skiing and fun. For you, it's a journey home, since you frequented this particular lodge since when you were young. With you are Kyoka, a very special childhood friend of yours, her stylish sister Keika, and your sister, Honami.

At the lodge, you enjoy the hospitality of the owner, Kasumi, a competent woman with a tinge of sadness in her eyes. Also at the lodge is the lovely Shizuka, the mysterious helper who has many secrets.

As the story develops, you are confronted with the reality that Kyoka, your friend since childhood, loves you. You've suspected this, but haven't ever been able to face this before now, with the magical and romantic winter snow all around you. At the same time, you are strangely attracted to the quiet and romantic Shizuka-chan -- which will you choose? Although many erotic temptations are in store in the quiet mountain retreat, and there are many paths you can choose, you must be true to your heart.

The one who obtains the Holy Grail will have any wish come true.

The Holy Grail War. A great ritual that materializes the greatest holy artifact, the Holy Grail. There are two conditions to participate in this ritual: to be a magus, and to be a "Master" chosen by the Holy Grail.

There are seven chosen Masters, and seven classes of Servants; beings akin to superhumans with incredible fighting abilities. There is only one Holy Grail. If you wish for a miracle, prove that you are the strongest with your powers.

Emiya Shirou is a high school student who has learned rudimentary magic from his father and uses it to fix objects. He finds himself engaged in the Holy Grail war as he gets attacked by a Servant. As he gets cornered, he somehow summons his own Servant and manages to stay alive long enough to compete against the other Masters.

The game comes with two different story segments, South Island and Winter Lake.

South Island Edition

During winter vacation, Tina sees a TV program about the balmy southern islands and says that she wants to go to the ocean. Aoi proposes that they go visit her villa in the southern islands.

They immediately board a cruise ship to make the journey to the island as a group. However, on the way the weather turns nasty and the ship capsizes. Miyabi calls for help, but the radio is broken and proves of no use. They are left wondering if a rescue team will come looking for them.

Winter Lake Edition

During winter vacation, Tina sees a TV program about the warm southern islands and says that she wants to go to the ocean again. Kaoru points out that they just been to the ocean. With perfect timing, Mayu shows up to invite them to her vacation home for the holidays.

This is an after story of Kira Kira. It has two parts: First and Second Stage

First stage concentrates on hotblooded young guy named Souta Honda. He loved two things in this world: rock and his childhood friend Yui Hoshimoto. But attempts to improve relations with both always turned out a total disgrace for him. After one more fail he promised Yui that he'll form his own band and became "bright like the sun" to make her love him...

Second stage is, in a way, a continuation both for Souta's story and original Kira Kira story. It tells about preparations for the large concert celebrating the 5th anniversary of Murakami's group, Happy Cycle Mania and bonds all old and new characters together.

Amamiya Yuuko, a mysterious girl dressed like a nun, and Himura Yuu, a mysterious gentleman who is somehow attached to the church where Yuuko first appears, are having a reunion in a church during Christmas time. Despite her attire, Yuuko is not affiliated with the church. She always appears generally out of no where, and disappears just as quickly in various places throughout the story to talk with Hiro or other characters and give them advice. Yuuko and Yuu reminisce about the past and remember events of the previous year around the same time at the beginning of the first chapter of the story. Yuuko hints of events that are revealed throughout Ef: A Fairy Tale of the Two..

My name is Tachibana Yuuji, a regular student with no particular plans for the future - until my parents left for Hawaii on a business trip last fall, leaving me in the care of my uncle in the wintry countryside of Hokkaido.

Small-town life on Japan's northern island didn't have time to get dull, as from the moment I got there I was reunited with my cousin and childhood friend Saki. She's pretty demanding, but when I'm hanging out with her and her school friends I don't mind; as I get close to them I feel like I'm finding meaning in life that I didn't know I was looking for.

Legend says there is a flower that blooms here in the depth of winter... as the twilight deepens and a snowflake melts in the palm of my hand, I stand with a beautiful girl by my side. Will we be able to uncover its mystery in this fleeting moment?

In a mythical age, a young man seeks to become an adult. He leaves his farm home to face the frontiers of the kingdom. He comes to a town where one can seek any apprenticeship freely. This is so one can find his own purpose in life, and perhaps his own lover as well. Jobs include: border guard, educator, various magical schools, fisher, and more. With each job there appears to be a respective woman in the same profession to charm. Will the hero be able to find and woo the girl of his choice in time for the town's festival?

Kaoru Sakurazuka is a normal young man, besides his unusually feminine features. Even his name, Kaoru, is a common name for both girls and boys. His friends don't care, and he enjoys living in a cheap apartment with his buddies Touya and Renji.

One day he feeling strangely ill, so Kaoru visits the school doctor, who is more like a crackpot chemist that enjoying creating new concoctions in the name of science. Upon his visit, Kaoru accidentally drinks a vial marked 'experimental medicine' – and the next day Kaoru, the boy, has become Kaoru, the girl! While he desperately tries to find a way to return to normal, he's forced to spend his days in his new female body.

Kaoru is surprised at the changes in his environment now that he's a girl. Everywhere he goes he's the center of attention, and it seems that everyone takes an interest in him. What strange adventures are in store for Kaoru, now that he has this new body to test-out?

Takayuki Yamano is a boy who simply wishes to break away from his family's tradition, running Yamano Inn, which is a hot spring resort where the most beautiful girls come from miles around for vacation time. One could easily question his sanity, as did his employers. Being rejected for the millionth time, he sadly returns to Yamano Inn to work as manager/butler. You've got three days to choose to follow and woo the girl of your choice.

Inganock, a city isolated from the outside, a city where everything is distorted, even the sun. It all started ten years ago, at a day called as 'Revival'. Then residents of the city slowly changed into beings that are partially human and partially animal.

To this day, only a few still look fully human on the outside. One of these is Gii, a former medical student, now an illegal doctor that walks the city and cures the poor for free. He changed too, but only in the inside and his change enabled him a mysterious ability that he uses to heal people that keep mutating further every day.

He has a few 'friends' if you can call them that. One of them is a black steel cat girl called Ati. Another one is an old friend from his medical school that he just met again after ten years, Salem. And the games story really begins when he encounters a little girl with pink eyes named Kia...

The first installment of the series, this particular game follows Oda Nanami who is a new freshman in high school. However on the first day, she ends up in an accident in which a senior student from the school comes to her rescue. Ever since that meeting with Matsubara Yuna, Nanami just cannot get her mind off of her and later decides to join the student council. But one day…Nanami catches Yuna doing something very strange, while also calling out Nanami’s name.

I am Tachibana Eiji, a regular transfer student. Everything was going fine at my new school, but I was in for a shock one day when I discovered the class president Rumi and my classmate Natsuki having sex in the school infirmary! Not only that, it turned out that Rumi was a futanari - a hermaphrodite with something between her legs I wasn't expecting to see. That evening when I got home and got a call from Rumi to come and meet her, I knew it couldn't be good - but the first thing she said was, "won't you join us?"

According to her story she'd been a futanari from birth, and because of this had an unquenchable curiosity regarding the ways of sex. She'd gotten to the point where having Natsuki as a sex partner wasn't enough... she told me she was planning to train our classmate Shizuko as a sex slave! Shizuko, a neat freak famous for her disike of her male classmates, had let it slip to Rumi that she was secretly very curious about sex as well...

Faced with no other options, I had no choice but to accept Rumi's request to join her and her comrades in their erotic schemes... and from that moment I was bound to these cute and "ecchi" kitties in their catgirl alliance!

Souta is a pervert, there are three girls living next-door and he knows every tiny detail about them. His parents are abroad for business, so he is taking care of them for now. On Arisa's birthday, they tell him that they are daughters of the Devil. Souta isn't surprised to hear that. They are relieved and tell him why they live in this world. Their purpose is to find a partner and prevent their race's extinction. They suddenly tell him to choose a partner among them...

A couple who had met in their high school years and married later on are having a happy and adventurous sex life. Wife works as a manager of the restaurant which brings in the money while her husband stays at home taking care of household chores everyday. The young wife is adventurous, fun-loving and she never turns down sexual advances launched on her by her husband. These were all peaceful days until one day the wife's sister, a college student, moved in. While their curiosity was growing, there was a secret adventure developing between the husband and his sister-in-law living under the same roof. One amazing voyage awaits them at the end.

The main character and his friends are attending their class in a quiet academy like normal students when a UFO suddenly passes overhead. The whole academy begins to panic and a beautiful, female alien appears from the UFO. She claims she traversed vast reaches of space in order to tie the knot with Yuusaku. Meanwhile, Yuusaku is utterly confused. As she tries to press him into marriage, she uncovers his secret stash of porn and begins using knowledge of cosplay from that in order to seduce him.

The other heroine, his childhood friend, joins in the fuss over Yuusaku caused by the alien’s mother, friend, rival, and even space pirates. On top of all this, secret agents from another country begin targeting the Aliens’ advanced technology…

A young man named Ibuki is a college student living on his own in an apartment complex. He is also a real cat lover who can't resist taking care of any random kittens he ever comes across of. One night he got visited by a Cat God, who wanted to reward Ibuki for his kindness towards cats. Ibuki wasted no time in his reply: "I want a cat girl!" - he said. The Cat God immediately announced that his wish will be granted and then vanished, leaving Ibuki to wonder if it was all just a dream.

Several days later, Ibuki is on his way home from work when he discovers that a cardboard box was left near his apartment. A meowing kind of sound could have been heard coming from the box which prompted Ibuki to open it up. Ibuki is shocked to see a beautiful naked cat girl sleeping inside. As she started waking up, she looked up at him and purred: "I've come to serve you, for all the kindness you've shown to my kind." The next thing he knows, his apartment is suddenly filled with all different types of animal girls, all eager to do whatever they can for him.

On a desert island in the south there lies an all-girls school where students learn the mysterious art of alchemy. This strange academy, known as Eiden Academy, is the setting of Edelweiss, a tale of laughs and tears shared between the heroines, who lived their lives free of men on this island, and Haruma Kazushi, one of the silly boys who came here to score. This is an all-new game which picks up where Edelweiss ended.

The heroines of this new story are Takase Sakura and Fujisaki Rin, two background characters who dominated the popularity polls and conquered the original heroines. This fan-disk will present an all-new story full of laughs and naughty things.

One scenario begins when Sakura, the girl many people suspect is a lesbian, is hanging with the guys and evaluating other chicks with them. When Kazushi says there’s no way he would ever fall for Sakura, Sakura puts her pride as a girl on the line and their competition begins. If he falls for her, he loses! As their classmates start a betting pool to see who’ll win and interfering to better their chances, who knows what ending awaits, let alone how Eiden Island’s power will affect the outcome!

The other scenario begins when Rin and Kazushi are both elected as their class representatives. As the two grow closer together, Kazushi winds up in an accident trying to save her. As a result, he suddenly finds himself with something that speaks residing in his crotch.

Fall, 2045C.E. Aizawa Shuuhei, a second-year cadet enrolled in Central Military Academy's primary division, is dispatched to Aries's orbital space station on a training mission. He reunites with his younger brother, Ryouta, and his childhood friend, Nao, both of whom reside there as cadets enrolled in the preparatory division.

Then an unidentified spaceship under the control of Jararacas, a radical terrorist organization, suddenly attacks the Aries and seizes control of the main control room. With all communication lines cut off, Shuuhei and the others have no way to escape. Trapped in space, 250 miles above the Earth, they have nowhere to run. Amid this desperate situation, the cadets must gather their courage and rise to take back the Aries. As they do, they draw ever closer to the horrifying truth lurking behind this incident...

"Will you go out with me?"
Mitsuna was asked to go out by the twins, Kyouichi and Reiji, at the same time!

It was too difficult of a choice for indecisive Mitsuna to make. "I can't choose between Kyouichi and Reiji......"

"Well, then will you go out with both of us?"
The trio then started a new life which they enjoy doing everything together including sex!

True Love's genre is considered to be a mixture of a dating sim and visual novel. The player controls a college student looking for his true love. The goal of the game is to win the girls' hearts before the last summer of freedom is over. Every day, when the main character wakes up, the player can plan the schedule for morning, afternoon, and evening. The choices (such as pleasure, sports, study, etc.) determine what events will occur during the day (if any), and also raise the character's skills in the selected category. Different girls in the game (there are ten of them) have different interests, goals, and preferences. If the character's skills in the category that the girl finds most important are high enough, he has a chance to become her boyfriend and the player is rewarded with erotic images of the girl.

The story takes place during the 4th Sengoku (warring states) era of Japan, an area of the Rance World which parodies medieval real-world Japan.

Sengoku Rance picks up where Rance 6 left off. Rance, after saving the nation of Zeth from destruction, ran away so he won't have to marry the princess. He and Sill ended up in Japan for a hotspring trip, upsetting the power balance of Japan, and sets the unification of its provinces in motion. Meanwhile, an ancient evil power stirs from its slumber...

Meet the alternate reality versions of Oda Nobunaga, Uesugi Kenshin, Takeda Shingen, Tokugawa Ieyasu, Mori Motonari, One Eyed Masamune, Hojo Soun, Sakamoto Ryouma, Yamamoto Isoroku, Saint Francis Xavier, and many more famous Japanese historical figures in the world of Rance!

Gunjo Academy is a facility designed to gather and isolate those students who got a high score on an adaptation exam (scoring high on this exam indicates that the student is less likely to be able to be adapted to the society) mandated by the government.

After a failed summer vacation with other members of the school's broadcasting club, Kurosu Taichi and some of the other club members return to the city, only to find that the world had completely changed.