The Days Sim Date series is Pacthesis' current series of sim dates. It began with Festival Days in 2010 and is still ongoing with the most recent being Number Days that was released on December 1st 2012. Memory Days is a "revised" version of Anime Sim Date 2.0 and 2.5. Pacthesis also uploaded "fake" sim dates titled Another Days, Another Days 2 and Another Days 3, and Rainbow Days for April Fool's Day in 2010, 2011 and 2012, respectively. Before the Days series began, there was the Anime Sim Date series.
Festival Days
Festival Days was the first sim date in the Days series that was uploaded sometime around March-August 2010. In this game you play as Mayu, a high school girl who is trying to get a boyfriend before the school's festival in 30 days time. In this game, Pacthesis appears in the school library to give you luck. [SPOILER] To get an answer from 3 predetermined questions, you must give her coffee.
Wonderland Days
Wonderland Days, based on the classic story Alice in Wonderland was released near the end of March 2010. The main character is Alice, who is sitting beside her bestfriend Noah. It was her birthday, so Noah went away to get his gift for her. While she is waiting for Noah, she sensed a person who jumped in a hole. She became curious and when she stepped on the edge of the hole, accidentally falls in it. She wakes up to find a man with rabbit characteristics named Oliver and discovers that she ended up in a kingdom called Wonderland. She is unable to leave Wonderland until the end of the month, so she stays in his home for the time being. [SPOILER] This is the only game which has an ending with a non-datable person.
Idol Days
Idol Days is the 3rd game in the series that features a girl named Lexie who moves to another city to fulfill her dream of joining a band. She subconsequently meets Cody, who leads her to an all-boy band who's guitar player has just quit and they ask her to join them. This game featured an English cover of Hatsune Miku's song "Rolling Girl" that was performed by YouTube singer, SquaDus.
Kingdom Days
Kingdom Days is set in a kingdom neighbouring Wonderland and was released on 5th September 2010. It is about a princess named Rose who is forced to flee her kingdom with her elf servant, Lewis, when it is attacked by a neighbouring kingom. They wander through a forest till they see on a castle and knock on it's door and meet a grumpy king who will not let them stay unless Rose marries him in 30 days.
Chrono Days
Chrono Days was released on 18th February 2011 and was Pacthesis' first sim date for girls that included a female datable character. It focuses on a girl named Saige who tries out a broken time machine given by her best friend's older brother and accidentally gets stuck 100 years in the past. You can switch from different eras. You also have 30 days until the Time Hole (in which allows you to teleport to either their present or the past) closes. This sim date, like from Festival Days to Wonderland Days, is an upgrade.
Another Days
Another Days, Another Days 2 and Another Days 3 are joke sim dates that Pacthesis uploaded to her deviantArt on April Fools Day in 2010, 2011 and 2012. It features badly drawn versions of many anime and cartoon characters such as characters from The Powerpuff Girls and Asuka Langley-Soryu from Neon Genesis Evangelion but also has characters created exclusively for each game such as Gary, Marty and Larry Stu. Each of these characters work as salesmen in stores apart from Larry who works in the popular fast food store McDonalds. Later, Marty Stu and Prince Dreamboat run off into the sunset, and Larry Stu is really an alien and goes back to his home planet, Douchebaggery.
Rainbow Days
This is basically what happened before anything from Another Days Sim Date 2 was made. It shows that Marty and Prince Dreamboat met at the gas station, when they were filling up their cars. The game is pretty unique compared to the others Amy makes, because usually the mission is to get a date. Here, you have to make yourself irresistable before the week (7 days) is up, when you have a date at the park with Prince Dreamboat. You have to work and buy merchandise, such as a $500 Rainbow Polo, a $10 hair cut, and even a $100 baby!
Although, the only good thing about this is that, unlike the other April Fools Day joke games, this is the only one that has a good ending. This is the 2013 version of April Fools Day Games.
Graduation Days
Graduation Days was a sim date for boys that Pacthesis never completed. It was going to be about a boy who makes a bet with his friend named Taku; if the boy got a girlfriend before Taku, he will treat him a hamburger, if Taku got a girlfriend before him, he will treat him a combo meal. You can read about it here.
Memory Days
Memory Days is another sim date from the "Days" series by Pacthesis. It is basically a remake of Anime Sim Date 2.0 and 2.5 as mentioned in the very first paragraph, except the guys are cuter and they actually make sense. The player protrays Ai (a renamable character) who will bump into either Kai, Haru, or Daichi. When the game begins, there is a little quiz on your personality, but it doesn't really affect how the game will go, unlike the Anime Sim Date 2.0 and 2.5. There are different holidays, like Valentine's Day, and their birthdays. There are a total of 10 endings. It was released on 8/12/12
Number Days
Number Days is a new addition to the sim date series. It starts off as Evelyn who seems to be trapped in the amusement park "Pactheland". She gets a weird text from an unknown number .She soon meets a guy named Thane, who also seems to be trapped. She is then told to go to the cafe. There she meets 2 other people. A guy named Bryce will introduce himself to you. When you ask him about the girl sitting at the table, He will say that she has been there before he even got there. He also says that she won't talk to him. You ask her name but she seems to be a bit quiet, then says her name but she won't say anything more than that. After that, Thane and some person seems to be fighting. The guy introduces himself as Spencer. Go play the game to find the truth about the mysterious amusement park. Also, later on in the game you will meet another guy. There are 5 characters and 8 endings that await so, TALLYHO MOFOS! It was released Dec,1, 2012.
Star Days
Since Star Days is on hiatus, there isn't much information on it. There are 4 announced characters [5 if you count the playable character] and 4 unannounced characters. The 5 announced characters are Tara, Ry, Magazine, Vanni, and Quoto. They all come from different parallel worlds and planets. They're on a journey outside the Solar System to bring back deceased loved ones since they believe that people become stars when they die.but yet I don't know which website it is on