Download virtual box by java
what technology is out right now that can actualy create a virtual world, and you can enter it, and if it is how much is it?
it will always create a virtual image because when you extend its light rays, they diverge and never end up intersecting. But if you extend these light ray backwards, they intersect to create a upright image which will always be virtual
VMware and Windows Virtual PC
akashyeash
webkinz
Wizard101?
roblox
see related link
You can try Klapty
guffins.com-virtual pets & pet games.com
You can create you own school at Second life online virtual Game.