Don't get frightened by the childish look of Neopets. Yes, this site has a good part of its pages dedicated to children, with the option of adopting a virtual pet and creating it, putting clothes on it, feeding it, playing with it (or them, since you can have more than one). It can be fun if you miss the good old times, and as a site from nickelodeon, neopets is certainly the best choice.
However, the biggest and the best section of this site is its flash games room. They have plenty of flash games, one better than another, ranging from action, adventure, sports, old arcade ones... there is even an stock market simulator. I used to spend hours playing the games of this site, in my opinion it is one of the great ways of cleaning the head after a hard day studying/working.
*Site address: http://www.neopets.com/
*Free? Yes, tottally. If you are interested in the "pet creation" part of the site, you may buy things to make your pet more beautiful. The flash games section is tottally free though. You may find some ads, but all of them are related to neopets events.
*Time spent playing: To be able to maintain your pet, a log-in of 5 minutes every 3 days is obligatory.
