I know there is a japanese version called Ameba Pigg but I do not know japanese and it frustrates me because I have to learn it to be able to play the game I used to play when I was young. There were rumours about why did they take it down but nothing has been confirmed/denied since then.
I HAVE BEEN MISSING PICO A LOT LATELY AND I'm not sure if a lot of people here have played Ameba Pico but it is a virtual game that was very popular on Facebook until they took it down year 2012.