One of the best games on NES,but the hardest.
You need all the concentration a person can get,and it's impossible for a kid to finish that level.
Anyway ,it's a good and addictive game.
The multiplayer part is also great,you can even attack each other,instead of cooperating,which makes it a little fun.
You can get a bat by destroying the robots at the first level,and you can even ride the pigs at the end of the level.
It's not simple 2D action,becouse the camera changes,many times.
You can see the characters normally on 2D,but you can also get a over-head camera,when you have to destroy the big robot at the end of the first level.
Conclusion: a exagerated hard game,but fun.