It's a little slow sometimes.
Duck Hunt was the first game on the NES that you use the arcase style gun with. It was a great deal of fun but you did have to have the gun to play the game. The graphics wern't great but it just suits the type of game it is and the sound is pretty cool too, also matches the type of game. This is one of the best if not the best shooting games that you have to use a gun for. The gameplay is really good and it's quite playable compared to others, you can just keep re-playing this over and over by yourself or even better with a friend.
Overall i'd reccomend you NES lovers to pull out those dusty consoles and get shooting because this is one great old classic game.