Galaxian, Galaxians or Galakzions?

Danae's Fan #1

Greetings.

I'm sort of confused, they all look alike and they all were released commercially, it seems...

Which is the one considered the official" coin-op conversion? Anyone knows?

Jumping Stack

http://www.worldofspectrum.org/infoseekid.cgi?id=0001933

JuanF. Ramirez

If I have to choose among the three games, I'd go for Mikro Gen's Galakzions, cool game. Smooth movement.