Paisano's 3D Virtual World Matrix
world name	company	world focus	User Generated Content	Ads	target audience	initial cost	2D/3D	URL	Description
3B	3B International	public	yes	yes	unknown		3d	http://3b.net
alphaworld	Activeworlds'	both	yes	unknown			3d	http://www.activeworlds.com/
Areae, Inc.	Areae, Inc.	unknown	yes	unknown	unknown			http://www.areae.net/
Barbie Girls	Mattel	public						http://www.barbiegirls.com/
Club Penguin	New Horizon Interactive	public	no	no	8-14 year olds	$5.95USD/month	2d	http://www.clubpenguin.com/
Croquet	Croquet	Public	yes		defined by world	defined by world	3d	http://croquetproject.org
Cyworld	Cyworld, Inc.	public	yes, limited	yes	13 years or older			http://us.cyworld.com/
Darkstar	Sun				defined by world	defined by world	3d	http://research.sun.com/projects/dashboard.php?id=168
Dubit	Dubit Ltd.	public						http://www.dubitchat.com
Entropia Universe	Mindark	public	yes	yes	public		3d	http://www.entropiauniverse.com
Flowplay	Flowplay	public			13-18 year olds		unknown	http://www.flowplay.com/
Flux	Media Machines	public	yes	not yet	defined by world	free	3d	http://www.mediamachines.com
Gaia Online	Gaia Interactive, Inc.	public	no	yes	public	free		http://www.gaiaonline.com
gopets	gopets	public	yes	special	13-45 / female dominate	free	3d	http://www.gopetslive.com
Habbo	Sulake Corporation	public	no, limited coming	yes	13-16 year olds	free	2d	http://www.habbo.com/
HandiPoints	handipoints	public	yes, limited					http://www.handipoints.com
HiPiHi	HiPiHi	public	yes	unknown	public	free	3d	http://www.hipihi.com/index_english.html
Idea Seeker Universe	Circle 1 Limited	public	yes	yes	tweens and teens ages 8 to 14 years old	initial cost is free with an extended experience at $7.95 per month	2D	http://www.kidscom.com/
imvu	imvu	public			13 years or older	free	3d	http://www.imvu.com
Journeys	Journeys	Public	Yes, limited	Yes	18-35	free	2D	http://www.codename-journeys.com/
Kaneva	Kaneva	public	yes, limited	yes	18 to 34 year olds	free	3d	http://www.kaneva.com
Millsberry.com	General Mills							http://www.millsberry.com/
multiple worlds	Corus Entertainment	public						http://www.corusent.com/others/corus_interactive.asp
Multiverse	Multiverse	both			defined by world	defined by world		http://www.multiverse.net/
mycoke	Coke							http://www.mycoke.com/
neopets	Viacom	public						http://www.neopets.com/
Nicktropolis	Viacom	public						http://www.nick.com/nicktropolis/
OLIVE Platform	Forterra Systems	private	n/a	n/a	enterprise		3d	http://www.forterrainc.com/
PlayStation Home	Sony PlayStation Home	public	yes, limited	unknown	unknown	unknown	3d	http://www.us.playstation.com/News/PressReleases/381
Project Outback	Yoick	unknown	yes	unknown	unknown	unknown		http://www.yoick.com
ProtoSphere	ProtonMedia	private	n/a	n/a	enterprise		3d	http://www.protonmedia.com/
Qwaq Forums	Qwaq	private	n/a	n/a	enterprise		3d	http://www.qwaq.com
RipLounge		Public						http://www.riplounge.com/
Runescape	Jagex Limited	public						http://www.runescape.com/
Second Life	Linden Lab	both	yes	no, though users can post ads	18 years or older	free	3d	http://secondlife.com/
SmallWorlds		Beta						http://www.smallworlds.com
Stardoll	Stardoll AB	public						http://www.stardoll.com/en/
Teen Second Life	Linden Lab	public	yes	no	13-18 year olds		3d	http://teen.secondlife.com/
The Lounge	Doppelganger, Inc.	public			13-18 year olds		3d	http://www.themusiclounge.com/
there.com	Makena Technologies, Inc.	both	yes, limited	yes	13 years or older	free	3d	http://www.there.com
Tronji	Ragdoll Worldwide (by Nice Tech)	public	yes	no	6- to 9-year-olds	free, at least in UK, where it launches	3D	not live yet
Ty Girlz	Ty Inc	public						http://www.tygirlz.com/
Virtual Laguna Beach	MTV / Viacom	public						http://www.vlb.mtv.com/
Virtual Magic Kingdom	Disney	public						http://vmk.disney.go.com/vmk/en_US/index?name=VMKHomePage
Webkinz	Ganz	public						http://www.webkinz.com/
Whirled	Three Rings	public	yes, unknown	unknown	unknown	in alpha currently		http://www.whirled.com
Whyville	Numedeon	public						http://www.whyville.net
Yumondo	Metaversum							http://www.metaversum.com/
Zwinktopia	IAC	public						http://www.Zwinky.com