Though short, its fun and addictive.
The only problem i had was it was waay too short. This game could easily be beat in a day or two.
This game shows what the zapper is capable of and i think thats what nintendo was going for instead of a full-length game.
The game is simple, you aim and shoot. but it gets a little challenging because some of the targets your not suppose to shoot and if you do you lose points, also in the later levels your targets which are moving enemies shoot back at you.
So in my opinion its worth the money and the zapper could be used in other games too.
Pros:
Fun.
Addictive.
Decent graphics. (Twilight Princess Graphics)
Cheap.
Cons.
Too Short.