Jersey Devil cheat codes:
Extra Life in the Park:
In the park level, follow the road from the start. Walk up
to the second fountain you come to. Go left and follow the
road come to until you see a statue on the right that looks
like a woman holding a long piece of paper. Tail whip it 3
times. Each time you hit it it should go a little off balance.
After 3 hits, it should fall over and a life will pop out.
Go outside the museum level to the big statue. Walk behind it and
it says " 02P " That means when you get your power level at 02,
push the statue and you should fall into the secret level.
Go to the tree level in the park. When you get to the bottom of
the slide on the floor there will be a "p08" sign on the floor
(your as to be at 8 for this to work). And just jump on it.
Next, in the graveyard level go to the water and jump on the
platform. When you get across there's a block with "p05" just
push it and walk in the cave.
Then, in the factory level go straight when you get in the level.
There's a pipe with "p07" on it. Hit it and go in.
Lastly, go to the sea port level and go to the lifeboat and when
the lifeboat goes down turn the camera in towards the wall and on
the wall is "p09" whip it and you're in.
Unlimited Extra Lives:
In the beginning of the game, get the extra life on top of the
fountain. Then, pause the game and check your status. Unpause
the game and there will be another extra life on top of the
fountain. Keep on doing this for unlimited extra lives!