The ' flying saucers' in the game are actually Cylon Raiders this is mostly imperceptible, due to the lack of detail that could be used in graphics of the platforms of that era.
The name was changed, but the graphics remained the same. The game was well into development when they discovered Mattel didn't get the license. One of Mattel's subsidiaries, Concepts 2000, had the license to produce Battlestar Galactica electronic toys, so it was figured to be a lock that Mattel would get the license to produce the official Battlestar Galactica video game. Mattel-developed Space Battle for Intellivision and its M-Network counterpart, Space Attack for the Atari VCS/2600 platform, were originally stated to be games based on the Battlestar Galactica series.
Original series 'Space Battle' & 'Space Attack' 2.2.3 Battlestar Galactica in Second life.2.1.4 Battlestar Galactica Deadlock (2017).