Wow. Back in 1979 how could you possibly have improved Asteroids? They apparently realized that people like me would be playing it and designed a cocktail cabinet for my sitting pleasure. In fact all three of the game offered today, thanks to the Arcade Flyer Archive, have cocktail counterparts.
Cosmic Alien looks very much like a Galaxian rip-off as the Cosmic Guerilla seems to resemble Space Invaders. Actually, rip-off is too harsh a word. Let us instead say inspired by?