Yes, RA is a weekly Beta program. It's usually in the right side bar to join.
Oberon: http:www.oberongames.com/default_wflash.asp Left side Beta Program.
Playfirst: I get their newsletter and belonged to the community. This one I had to submit a request for to be considered for the "First Peek Program".
The above come to my inbox when they have games available. If you sign up don't catagorize your interests, say you interested in all games.
Alawar: You have to have bought something from them.
Big Fish: You have to be a paid member of the online community.
Reflexive: You have to live near Irvin, CA, they do only onsite testing
Mumbo Jumbo: Forget! They send a 15 minute demo, lmao.
Sorry to say RA is the only reliable one, comes out every Thursday.
Will post more when I remember them, just got up, takes my brain awhile to function.
Whabbit: I went there to look for strkeball as your above post mentioned it would be there if I wanted it. I am assuming filefront is a storage place. I looked for your name and that popped up, lol, only found your "sim" self, did you get out of the hut, lmao!?
Suki