What are the best 3d games online with free download and register

try yabbbo its the best game ever its a virtual world and its 3d no downloading you need a account and a password it dose not cost anything and you can buy furni with credits and you get 5000 credits and 2500 pixels but on habbo you get no credits and 2500 pixel but it cost real money to get credits that why i go on yabbo