Radar Scope is not that bad of a game, believe me, I'm sure there's features to enjoys in this game, the graphics is actually very fair for 1980, just admire something out of it.
Me, personally, I found this to be a enhanced version of Space Invaders, sure it's hard, but I at least admire the graphics and programming they did with the game, they're responsive and good, I actually find the game to be quite good.
I say give this game a chance.