There are 2, 4 and 8-ways joysticks. Most joystick can be configured to bout 4 and 8 ways. Some games are almost impossible to play with a 8-ways joystick, like Pac-Man and Donkey Kong. Ultimarc makes some models that changes between 4 and 8-way on the fly (while playing).
4 or 8 way joystick witch can be shiftet from the top. This makes it perfect for both 4 way and 8 way games. The MagStik is centered by a magnet instead of a spring.