Complex sentence: Habbo stemmed from a 1999 hobby project by creative designer Sampo Karjalainen and technologist Aapo Kyrölä called Mobiles Disco for a Finnish band, a virtual chat room running on Aapo's Fuse technology.
Split into simpler sentences: Habbo stemmed from a 1999 hobby project by creative designer Sampo Karjalainen and technologist Aapo Kyrölä called Mobiles Disco for a Finnish band. It was a virtual chat room running on Aapo's Fuse technology.