A friend + You + NES + Rush n' Attack = A grooovy time.
-Gameplay
Fun, especially with a friend as previously mentioned. The game is tough though, so co-operative play is almost recomended. If your worried about your kids coming into view the violent the violent games played today, then give them a copy of this game as they will have fun from the pick-up-and-play mechanics and multiplayer. All without one speck of blood. If they complain that they don't want to play dumb old games, then smack them in the head for their ignorance. Oh yeah, the game is fun.
-Graphics
Dated, even by 80's standards. The game looked average at best the time it was realeased. Though there are lots of enemies on screen.
-Sound
Music is overall forgetable, and sound effects aren't that great either.
-Replay
Fun and challenging gameplay should be enough for another game, and with a friend it's even better.
I wasn't expecting old Rush n' Attack to age as well as it did. It's pretty fun and should keep you busy for an hour or a half (if lucky).