Team Hacker is a collaboration for a contest on the forum called Battle Of The Collaborations.
Team Hacker has to design a game together, (Pacman, rescue the cat, Platformer) on the account Team Hacker. If you join, we will tell you the password.
EDIT: I'm sorry guys. Nobody can be added to the team anymore
The contest is by rawrbear. Contest is here: http://forum.gethopscotch.com/t/the-battle-of-the-collaborations/8677/149