If you create an account and log in then your games are stored indefinetly and you can get points wich later will be redemable for prizes. If you don't you can ply but your games are only saved as long as you maintain the session(until you close firefox) and you don't get any points.
Other then Statistics, Prizes, and Feature Request options in the menu don't work the site should be fully functional. It can be loged on to from facebook using
(esconder) Jogue um jogo em tempo real com um adversário que esteja online. Para o conseguir ambos devem seleccionar a opção "Jogar e ficar nesta página" como opção por defeito e depois refrescar a página com a tecla F5! (TeamBundy) (mostrar todas as dicas)