Betta, betta, betta, betta...
We need betta games that are free!!!!!
By their very nature, Alpha and Beta games are 'closed' to the general public by the developer as they are 'test beds' for their latest developments and as such, young man, unless you have an 'invite' then you will have to wait for the development to be released :¬)
Check your spelling online here ;¬) It may not be the best but you may find it useful;¬)