Ai Sp@ce is being developed by the video game developer Headlock where users can interact with bishÅjo game heroines from Clannad, Shuffle!, and D.C. II ~Da Capo II~. Set to go live in summer 2008, the world will recreate each game franchise on its own virtual island which will be linked with a central Akihabara Island where users can interact, bridging the gap between the separate franchises. Users will be able to create a customizable avatar to represent themselves in the game, along with choosing one game heroine to live with, which is referred to as a character doll, or chara-doll for short. The user and chara-doll reside together on one of the three in-game "islands" depending on which franchise the heroine is from, which includes a house with furniture and clothes that can be purchased. The chara-dolls can also be customizable in that they can develop a unique personality for each user.
I know it loks like it's the Clannad game opening, but it changes just after Nagisa pops up.
You only need to watch up until the Shuffle! intro to the game, as then it repeats itself.
I wonder If they will bring out an english version?
tldr: some kind of MMO Visual Novel where you can cusomise your "heroine" and interact with them with more choice you get in a regular visual novel.