I have set up these steps to help you get vanila minecraft to work on your raspberry!
(if you are helpfull plese leave coments in the post so I know how to use java applets)
missing!
(I need you to tell me how to work java applets for raspberry.)
steps:
1.go to MC.net
2.login or register
3.play demo
4.play world on demo
(stop the demo world while loading or it will not work)
5.download minecraft linux.jar
6.run it
7.login
(or if you do not have a account just type your name and login for offline moad)
8.play it and it will work!