Thought I'd look at
Onverse, which is billed as "...a free online virtual world full of fun people and cool things to do. Unlike 2D social networks that simply give you a profile page, we give you a free 3D home, clothing, furniture and some tools to get you started. It's your new virtual life in a massive virtual world".

I found the controls very easy to use and the the environment flowed easily, and background sounds made a big difference as well. Not much you can do to customise your avatar just yet, and most activities look like they may be geared towards use of in-world currency.
It makes me think of Gaia Online but with better graphics.