I dont think its "realy" that AB/DL and someone could missunderstand it but "Who´s your Daddy" is a game where 2 people play against each other as Daddy u have to take care about the baby and as baby u have to make trouble by trying to kill yourself that sounds pretty awfull but the idea behind it is that u if u dont watch your baby and grab the stuff and it could eat something that makes your baby sick and as daddy u can feed them with fruits to heal them from their illness but thats the only one i could think of... here is a Steam-Link: http://store.steampowered.com/app/427730/?
There is an ABDL online MUD. It's pretty crazy. I've always wanted to make an ABDL game - I can handle the programming, but lacking the art there isn't much I can do.
There is also an ABDL RPG. just google search these terms, I do not think we are supposed to link these games, especially the MUD I've seen it get the black sheep treatment.