Second Life

Template:Needs Translation/de Template:Needs Translation/es Template:Needs Translation/el Template:Needs Translation/fr Template:Needs Translation/he Template:Needs Translation/ko Template:Needs Translation/nl Template:Needs Translation/hu Template:Needs Translation/no Template:Needs Translation/da Template:Needs Translation/sv Template:Needs Translation/tr Template:Needs Translation/pl Template:Needs Translation/pt Template:Needs Translation/ru Template:Needs Translation/th Template:Needs Translation/uk Template:Needs Translation/zh-Hans Template:Needs Translation/zh-Hant

See http://secondlife.com/whatis/ or the related Wikipedia article