1. Colorful Heart ~12 ko no Kyururun♪~ カラフルハート ～12コのきゅるるん♪～  Giga
Main character 's parents go overseas living him alone. With the help of the childhood friend he becomes accustomed to such life. On the day of graduation ceremony he learns that he needs to marry a woman. 12 bride candidates move in to his house to live together for one month.
I have not invented a reason to block such a game yet, but it's an ero-tilt moege from Giga, so it lost before it was even issued.
2. Kenshuui Tendo Dokuta 研修医 天堂独太  Spike 1 2
Kenshuui Tendo Dokuta is a medical drama that focuses on challenges of a young new doctor, Dokuta Tendou. He is a 25-year old training rookie, fresh out of the University, and low on experience. In this hospital-themed game the player won't just plunge in and focus on treating ailments. The protagonist has to talk to patients and, based on the clues they give him, try to find out what is wrong with them, if they can be treated, and if so, how.
There is an English review.
3. Amaenbou ~Mou! Ikenai Ko ne~ あまえんぼう～もう！イケないコね～  Speed
Main character is a spoiled young man bathing in attention since childhood. One summer he is invited to a family as a tutor. All the women here are sweet beauties. They accept protagonist as he is and even allow him to advance further than that...
4. Cherish Pizza wa Ikaga Desu ka♥ チェリッシュピザはいかがですか♥  F&C FC02
The story of a college student who was decides to work part-time at a pizzeria "Cherish Pizza". What kind of life will he have at this part-time job?
Generic moege. It's F&C, after all.
Here and there - in the space between buildings, in back alleys, perhaps even in the underground - the Forest bleeds into our world. The Forest is a forbidden place where the rules of our world do not apply.
Our heroes must struggle against the Forest, without so much as the hope of assistance or understanding from the outside world.
They do battle against the "riddles" the Forest imposes upon them with the aid of superhuman abilities known as "gifts."
And should they know defeat in their battle against the Forest, they will face that which they fear most - expulsion from Shinjuku.
Game is localized and has English reviews.
6. Shuka 朱華  LiLiM
The Chinese-style world of Shenhua. Young queen rules the country of Shonan where spirits worship is practiced and theater plays are main means of entertainment.
Main character is an actor who appears in this world after following a disappeared actress in his dream.
Boy investigates a new world as he can't return to the previous world. Scenario remains on ordinary level instead of promises of epic magnificence, so it remains an average game.
7. Schrei-Ten  Pisckiss
Shrei-Ten is the name of a huge donut-shaped continent dominated by the kingdom of Schleiten. The holy king Schultz Engel defeated his bitter enemy Zusain fifty three years ago gaining supremacy and bringing eternal peace. Main heroine is an adventurer who accepts bounties to get rid of robbers, pirates and monsters. This is a story told from the viewpoint of seven different adventurers..
Elysia is only nominally main heroine. Story is told from seven different perspectives. All the stories develop in parallel. I'll review it myself since there aren't games this month that interest me more than this one.
8. Hurrah! Sailor ふらせら～HURRAH! SAILOR～  Datam Polystar
Konika, Ichino, Mareta, Shoya, and Ensign Kurie find themselves stranded on a planet whose inhabitants have developed virtually no technology at all.
The Two United Empires and the Federation Kingdom have been at war for centuries and entire galaxies have been turned into war zones. With neither side ever achieving a decisive victory, the conflict has been dragging on so long that both sides have even forgotten the reason why the war originally started.
But now, for Konika of the Federation Kingdom, and the others from the United Empire, they must put aside their differences to find a way off the planet together. During this process, they find that perhaps there are no differences between them and some of them begin to wonder if they wouldn’t be better off not returning to the war.
It's a casual galge on a tropical island and - despite the synopsis - almost without SF elements. It's not a game for everyone, but a good change of pace from romantic games.
9. Tentama 2wins てんたま 2wins  KID 1
The story takes a couple of years after the original game and the main protagonist is Akira Ichinose, a high-school freshman who is staying at your relatives' place until graduation. The life seemed without any particular problems until one day, out of the blue, twin sisters, Kae and Momi, apprentice angels, no less, crash landed on top of Akira in his room.
It's a SIM, because there are parameters to develop. There's a good mix of gags and traditional console KID boredom.
10. Nurse Witch Komugi-chan Magikarte てんたま 2wins  KID 1
Ungrar, the King of Viruses, has escaped from his prison cell in Vaccine World. Maya, the Goddess of Vaccine World sends Mugimaru down to Earth to find a human to accept the powers of Vaccine World and become the Magical Nurse. He finds the best (and the only willing) person for the job when he meets Komugi Nakahara. Komugi is a playful, lazy, and easily distracted (typical) teenager whose dream is to become a cosplay idol. Balancing her career with the Kiri-Pro Promotion Company and her new job battling Ungrar's loyal henchman, the Magical Maid Koyori, Komugi delights audiences in this parody anime series.
Another anime ripoff, how long will you suck, KID...
11. Ai Cute! Kimi ni Koishiteru 愛cute! キミに恋してる  Palette
Sakurai high school is build around a stone that used to be a guidepost for transportation. At school it becomes a place for confessions. When main character confesses by the monument, love cupid Chocolate appears. If he develops real love feelings, this love cupid can become human. Protagonist tries his best to get a girlfriend, but will his efforts be rewarded?
The number of heroines is big, and we need to memorize their tastes to raise favorability level in conversations by the right choices. The development of Chocolate route is unexpected, but not sure other heroines are worth the trouble.
12. Moe Love ~Natsuiro Moegi Ryou~ MOEラブ～なついろ萌黄寮～  Giga
While aimlessly walking around after loosing his apartment in a fire, the homeless Shuichi met a girl in housemaid attire. Apparently, that girl was his younger sister separated from him after their parents' divorce. She offered him shelter. He accepted it of course... only to find out that they'll be living together in an all-girls inn managed by his sister. The boarders were against it, however, they granted him a month of probational stay after some twists and turns. And his cohabitation with the girls began.
Two horrible Giga moege in just one month? Their productivity is getting out of control here.
13. Silent Half  LimeLight
Main character regains consciousness at the hospital. His last memories are about a girl that got into an accident together with him.
Time passes, and one day that finally arrives. Protagonist wants to hug and kiss her, but she does not remember him. What will he do?
There's little sense in the game. First half is the story of meeting and reminiscence. The second part suddenly branches to three different heroines. There's no charm felt.
14. Sora o Miagete Omou Koto そらをみあげて想うこと  Black LightIn 2005 an artificial object flew into the Earth orbit. At the same time people with different supernatural powers started to appear on the planet. A research team was sent to the object and exploded together with the object.
In 2015 main character with the power of "possibility expansion" enrolls to a private school on a solitary island. This power helps to create the 3rd option when facing a fork. He communicates with teachers and students possessing different abilities without knowing that it's going to draw him closer to revealing the mystery of the space cube artificial object...
Game turned out to be surprisingly decent. Main character's ability relies on quantum mechanics and is cleverly used in the game. There are a lot of SF elements, some are even difficult to accept. True route puts all the dots at right places, but it's easy to trigger, so it's easy to miss on other heroines routes. Romantic element is a bit thin, and story can just through weeks - that allows to extend game period to eight months. Game is mostly about SF and can only be enjoyed as such.
15. Towakoku 永ワ刻－トワコク－  PeasSoft
Main character starts to live alone after entering university. One day he watches girl Setsuna dying in a traffic accident. He uses his awakened ability to turn back time to help the girl and discover what's hidden behind disappearances in the town. Protagonist's important people start to get involved. At the same time all these crimes push him to commit atrocities himself...
Time Jump System is featured in this work. It's needed to return to the past with the learned information and rewrite it. And it's important to do it at the right time - dwell too long and protagonist gets killed instead. Scenario is weak per se, but together with this system it gets rather interesting.
1. Chijoku Kakeizu 恥辱家系図  Fukurou
Main character has to flee from his house and find a modest room nearby. However, feels jealous of a warm relations family that moved into his house, so he decides to break that family. However, he gets so exhausted from starving that he is found unconscious by that family members. Only women live in this house, and he takes this chance to spread his poison.
2. Fetish: Omote no Kioku フェチ 表の記憶  Ume Soft
Main character returns to his alma mater. Memories overflow him. The sound of laughter draws closer. Even his distant memories pushed at the back of the consciousness start to show up with unprecedented liveliness.
3. Fetish: Ura no Kioku フェチ 裏の記憶  Ume Soft
Main character returns to his alma mater. He starts to remember his obsession with girls wearing school sport costumes.
4. Imouto ~Sweet & Bitter~ いもうと～Sweet&Bitter～  Anim
Saint Valentine's day approaches. Mind and body get unbalanced. Boys and girls in various places get to become adults on this day without giving it a second thought.
5. Ojou-sama Ikemasen! お嬢様イケませんっ！  Red Signal
Main character became a sex teacher in a millionaire's house. The girls of this house are diligent students and quick learners. After theory course it's finally time for practical exercises.
6. Kasuka  Grey
You're spending the weekend at a resort with fellow students. How will you spend your time? Lounging around or meeting new friends?
7. Harem Days ハーレムDAYS  Black Package
Main character is an ordinary student who often skips classes in favor of club activities and part-time jobs. One day his childhood friend Haruka barges in and decides to live at protagonist's house. Then Haruka's elder sister Chiaki comes to persuade Haruka to return home, but stays to live together to protect her sister from man's advances. Is this the beginning of a harem?
8. Himekoisou 姫恋荘  Fukurou
Main character is asked by his grandfather to manage a boarding house. Only beautiful girls live there. They all try to use their charms and seduce protagonist for various reasons.
In this game you played as a perverted teacher that happens to find one his students trying to steal a test paper to cheat. He ends up black mailing her and force her to have sex with him. Eventually he use her to help him screw all of the hottest girls from the school.
10. Onna Kyoushi Chijoku no Senritsu 女教師 恥辱の旋律  GuiltyN
Kasumi is a 25-year-old music teacher at a boys private school. During private lesson photo club member has a moment of passion with her and manages to make indecent photos of her body. That was the start of a long chain of atrocities and humiliations aimed at teacher.
11. Pink Style  Curious
Sex stream is a form of sexual dance that gained popularity underground. Mysterious voice leads main character to a school facility facility where teachers and director put him in charge of sex stream department to train girls. It remains in a sleeping state with zero girls as members. But it's bound to change very soon.
12. Shukujo no Tsuyagoto ~Hitozuma Miboujin no Nureta Kuchibiru, Karada no Uzuki~ 淑女の艶事～人妻・未亡人の濡れた唇、身体の疼き～  TinkerBell
The protagonist is a teacher at a prestigious school; Sae is a widow, she is the head teacher and is organizing the upcoming graduation ceremony, three other married women will help with the ceremony: Reiko who recently had a child and her husband does not make love to her ever since; Kaori who is a policewoman and its also sexually frustrated and Minori who was Sae's pupil and is the protagonist's friend.
One day the protagonist walking at night in the park witnesses Sae having sex with a man...will he use this opportunity to intimate with the hot head teacher....He also begins developing good relationships with the graduation committee, who consists only of sexually frustrated married women, who are more that happy to have a man that is interested in them...
13. Crossfade ni Ochita Yume クロスフェードに堕ちた夢  More More Entertainment
One year ago main character suddenly lost his memory. One day he meets a girl in need for help. He takes his gun and protects the girl chased by a mysterious organization. With that the memories of the past gradually start to recover revealing unpleasant truth...
14. Karaoke no Ouji-sama カラオケの王子様  Tomo & Yuri GAMEZONE
Main heroine is a first year tennis club member invited to karaoke. Her behavior will increase or decrease the intimacy level with each character.
15. Kagome かごめ 
A browser-based Flash visual novel.
16. The Legend of the Deep -Episode4-  Oyama Dennou Giken
A group of abnormal reproducing monsters poses such a great threat to the continent that kingdoms stop rivalries to oppose them. The mightiest state suddenly gets defeated by the beasts, so princess Sofia is going to be crowned queen-in-immigration. But Sofia and her followers get lost on the way in an ancient archaeological site. A group of knights is sent there to discover princess fate.
17. Reijou Marie ~Boshi Jutai Bansankai~ 令嬢マリー～母子受胎晩餐会～  Black Lilith
Beginning of the 19th century, Maria Eruban, the only daughter of the house of the Baron Eruban, loses her father to disease. Her mother has already passed away, and she remain in the mansion with Charlotte, the second wife of her deceased father, and Ellis her daughter.
After her father is gone, fear has taken over Maria as there's no ties of blood with Charlotte. So Maria began to orchestrate something, however the mother and daughter ....
18. Kami Tama ~Kami-sama no Tamago~ カミ☆たま－神様のたまご－  An*tique
Main character manages a coffee shop after his parents' death. One day he finds an old shrine that he used to play as a child. He hears a voice there that promises to make one his wish come true, but can not say a word in response. The next day two girls come to his place to fulfill his wishes as their fate depends on it. Their communal begins. Soon a strange little girl with dark hair approaches the door with ominous intentions...
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 dislike 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!
20. OL Shimai OL姉妹  Selen
Main character is an engineer in a big IT company. He is secretly in love with his subordinate Ayaka. But one day he learns that Ayaka got engaged with another person from the same company. Protagonist is enraged and wants to quit this job, but first he decides to lure Ayaka to a remote country house and abduct her there to get his revenge.
21. homeless, the vagabond  Wosakana Soft
Boys and girls linked with vagabond life style and love for musical instruments talk about various things. The impression on the talk determines the ending.
This is a world without colors - the world of lost colors.
Main character spends his life killing colored human beings "Colors" there. However, one day he becomes such being himself - and thus the hunter becomes the hunted. He needs to travel the colored world to uncover the mystery behind world creation and revert the disease of colors that he contracted.
23. Artificial Mermaid -Silver Chaos II- Artificial Mermaid -Silver Chaos II-  Vivid Color
In the future, the world is heavily polluted as the aftermath of a war that used chemical weapons. If a person is overly exposed to this polluted air, they could die within a month: unless they have a "Life Microchip" (LMC) implanted into their body. Because of this, there is a lot of crime surrounding LMC use. Therefore, the government has set up a special team to handle these crimes: The Lifemicrochip Crime Commando (LWC).
Yuuri Mimori, prompted from his childhood friend Ibuki, decides to join the LWC with him. Despite the extreme danger involved as a member of the LWC, Yuuri feels no qualms about it, thinking that as long as Ibuki is there too, he can endure the severity of the job.
On their first day, Yuuri and Ibuki are guided by Roy, the leader of the LWC, to meet the various members of the team that they will have to work with. That night, Yuuri returns to his room, a bit tense from the first day, and begins to lose consciousness. The minute his eyelids started to close, he felt a horrible pain in his chest.
Yuuri has suffered from a terrible illness since he was young. If he does not take medicine regularly, this disease will cause his body to deteriorate. As he starts to lose consciousness, he feels a warmth on his lips, and a voice at the edge of his senses is telling him to hang in there. Something cool passes into his mouth, and when Yuuri begins to return to consciousness, he sees Ibuki's worried facing looking down at him.
Since then, when Yuuri sleeps, he sees the same dream every night, where he feels submerged in water, like a fish, and a voice gently calls out his name from a deep darkness. Whenever he tries to confirm who it is, he wakes. What is the meaning of this dream...?
24. Cradle Song ~Kinou ni Kanaderu Ashita no Uta~ くれいどる そんぐ～昨日に奏でる明日の唄～  Windmill
The city is filled with excited people. There is a legend that "Dragon" defeat monsters that used to live there and saved humans in the long past. The bones of "Dragon" are found and there is a message on them. One day, Tania meets a girl, Rea Teata. She holds a tiny animal, actually it is a child of "Dragon".... Tania starts to feed it with Rea and he starts to find something he lost before....
25. Daisuki na Sensei ni H na Onedari Shichau Omase na Boku no / Watashi no Puni Puni 大好きな先生にHなおねだりしちゃうおませなボクの／私のぷにぷに  Rune
The protagonist Takayuki (default name, can be changed) is working as a home tutor for various children. It's all rather casual at first, but when his students start wanting more of a "reward" when they do well...
Short quiz-game segments that determine how well you've managed to teach your pupil. You can choose at the very beginning who you want to teach, but later on in the game you have to work with more than one student each month.
26. Fruit Punch  Cronus
“Fruit Punch” is a late night TV program where idol girls cosplay and report from various places. Considered the airing time some spicy scenes are possible, but no one expected girls to be deceived and sexually assaulted for real.
27. Itsuka Furu Yuki いつか降る雪  Deko Pon!
The protagonist is a doctor that's got a new job at a small out-of-the-way sanatorium for the terminally-ill. He goes there but is surprised to find the place is practically empty, except for a handful of patients and one other doctor (the doctor that hired him is busy and doesn't even bother to come say hello).
The title comes from the main heroine, who has a debilitating brain disease that's in the end stages and is losing her long-term memory. She's going through the days in the hope that before she passes away she'll get to see the snow again, because in her diary she wrote that the snow was beautiful and that she really loved it, but she can't remember what snow is like anymore.
28. Kikou Shoujo Tai Girls Force 機甲少女隊ガールズフォース  ZeroCool
Mankind is attacked by aggressors from outer space. Through the godlike devotion of the female emperor, the already desperate human race gains the courage to squeeze the last strength. The research of revolutionary weapons allows to revert the situation. The invaders retreat leaving their destructive weapons all over the universe. This is a story about a military academy where future protectors of the galaxy are being brought up.
29. Mahokoi ~Ecchi na Mahou de Koi x Koi Shichau~ まほこい～エッチな魔法で恋×濃しちゃう～  Atelier Kaguya
Seiji is back to his hometown and Aoi, his old friend, Akane, his classmate, and Hinano, his younger sister help him move to his new house. All of a sudden, a girl falls down his room. Her name is Chocolat and she is a magical girl, according to her. She casts magic to repair the roof of his house, but it fails and all of them become able to use magic instead.... Also, Seiji's body changes and he can't stop chasing girls. To get back to normal, he needs a full-fledged magical girl, but there is none. Seiji finally makes up his mind to train one of them to become a full-fledged magical girl....
30. Majokko a la Mode Majo no Natsuyasumi 魔女っ娘ア・ラ・モード まじょの夏休み  F&C FC01
Short story takes place after the events of the original game.
First morning of the summer vacations after the tiresome exam. New heroine Leylis appears in the bed of the protagonist. She slips away as he rubs his eyes. What's her true identity and intentions?
31. Naburi Yuugi 弄り遊戯  Marine Heart
The protagonist, Riku, is a plain, uninteresting student. He's never had a girlfriend, only devotes himself to his job, and even in school he doesn't have a lot of friends.
One day, he recieves news of a meetup of alumni from his old middle school. Riku remembers the bad memories he had of middle school, being bullied by three of his classmates. But, bored with his unchanging daily life, Riku decides to go to the reunion anyway.
Without realizing it, he opened a world for himself full of despair and violation...
32. Naburi Yuugi Tokubetsu Hen ~Aitsu ni Shuuchaku Suru Riyuu~ 弄り遊戯 特別編 〜あいつに執着する理由〜  Marine Heart
Short prequel stories for the main four heroes of Naburi Yuugi.
33. Reverse Desire ~Uragaeru Yokubou~ Reverse desire～裏返る欲望～  TOP
The hero of the story is Murayama Shuuji. A football elite of the Soccer Club and the best player on the team. With his perfect career and image, he is the future of the prestigious Mitakadai School. Many girls admire him for his talent.
Among the admirers is Miyamori Toone, the student council president. Hozumi Yuina, his quiet childhood friend. And the sweet and kind kouhai, Natsuki Mana. Surrounded by beautiful girls, all who love him so much.
It's a perfect life of a boy and a group of girls who admire him...But there is a ghastly figure staring from among the shadows...
His name is Tatsukawa Takeshi, the hero of the "dark side" of the story. The unpopular physical education teacher, in fact hated by the school. As he sees Shuuji with his growing popularity, makes him burn with envy as his fame grows out of control.
He detests Shuuji's popularity. And with dark ambition, he wants to turn the school into a sea of despair...
So, who will they prey? Which will they devour? Will you lead them into the road of serenity? Do you make them cry and scream? Will you bring hope for those who care the most? Or will you turn everything inside out into a twisted fate?
It is all up to you which way the wheel turns......
34. Torikago 鳥籠 -TORIKAGO-  Actress
In the beginning of this story, protagonist's mother lies on her deathbed. Before passing she tells her son that her father holds a position of great power, and that he must seek him to gain what is rightfully his. He goes in search of this man named Danda, and finds him soon enough. Danda accepts his son’s claim, but only with open-arms held halfway back. Out of all the rooms in this grand palace, our protagonist is stuck living in a room little more than a servant’s quarters. While exploring the palace he meets his sisters-in-law and their mother who has recently married Danda. Eventually he comes across a mysterious singing girl trapped in a birdcage. This is where Danda’s true motives are shown: our hero has been assigned to care of this girl. But as the days go by in care of her, the questions surrounding Danda’s “most precious treasure” abound!
35. Tsui no Yakata ~Koibumi~ 終の館～恋文～  Circus Fetish
Released under the Circus brand division 'Circus Fetish', the Tsui no Yakata series mainly focuses on maids.
The first game in the Tsui no Yakata series, tells the story of second lieutenant Mori, a wounded soldier returning from a war in Russia.
36. Yokujou Kyonyuu Youkai-tachi no Meikyuu 欲情巨乳妖怪たちの迷宮  Pinky Soft
Main character is born into a family that domesticates monsters. He is requested to go to the border village and help put the monster threat down.
37. Inran Mahjong ~Nugasare Modaeru Maid-tachi~ 淫乱麻雀 ～脱がされ悶えるメイド達～  Ringerbell
Main character decides to hire a new maid. But there are six candidates, so wants to make a decision through playing mahjong with each of them. It's not important for the girl to win in such game, but it's much more important to lose spectacularly and accept the punishment game...
38. Izayoi ~Sougetsu Hakuro Shou~ 十六夜～蒼月白露章～  Milk House
A spiritual barrier is set up by the shrine maiden, and a terrifying thing surrounds her body. The fate of the girl dragged into the bottom of the cloudiness is ...
39. PSO Underground / Kuchiyuku Omoide ni PSOアンダーグラウンド／朽ちゆく想い出に  Kittens
Year AUW 3087. Three years after explosion of Central Dome life at planet Raguol has finally come to normal state
Middle-aged Raymar Jay of the Hunters Guild receives a request from his bad buddy to dig information about the infiltration into a small military center three years ago. Together with former lover and friends protagonist challenges the mystery of the lost past.
40". Hoshi no Oujo 2 星の王女 2  Mirai
"My little sister who is more important to me than anything... I want you to promise me. I'm sure you will be happy."
It is two years after her beloved parents as well as her older brother die. The protagonist Mirai is now in her third year of university.
"I have to be happy. I have to smile a lot and make my dream come true ...because, I promised big brother."
With sadness still in her heart, she tries to earnestly live.
The people supporting her are her increasing school friends and a number of men.
Her childhood friend who is back from being a soccer player in Italy, Kouhei.
Her dead brothers physician who has now retired from medicine, Hayato.
Her cool headed but somehow shadowed teacher, Shuuji.
"I... like those people."
Gradually the protagonist awakens to her feelings.
--But soon she has an unforeseen meeting, is it a dream or reality?
Worlds are intersecting and something is happening.
"I want to meet that person again once more."
With that strong wish her frozen heart begins to thaw.
An adult love story weaving the tale of two worlds.
"Please, embrace me."
Who will you fall in love with?