Cosmic Encounter was one of the first hobby board games I owned, back when I was a teenager. It was the Games Workshop edition. I can still remember being baffled by the rules. It looked and smelled like a conquest game: there were battles and alliances and units died. But what the hell kind of conquest game made you draw and card to determine your target instead of you picking on the weakest player? Where was the fun in that?
Oh sure, you could still make alliances. The encounter each turn with your random opponent allowed each side to invite people to help out. Sure, there was still excitement, with combat determined by the number of ships on each side plus the play of a numeric card. And the draw of a different alien power for each player was a fascinating idea. But where was the sense of narrative, of slowly building friendships and enmities?