Earthworm Jim 3D

Level select:
Pause game play and press Right, R, B, A, L(2), A, R.

Small Jim:
Hold Z and press C-Up, C-Down, Left at the title screen, then begin game play.

Earthworm Kim:
Collect 1000 marbles and successfully complete the game with a Smart Superhero rank to unlock Earthworm Kim. The difficulty of the game will increase when played as Earthworm Kim.

Go to the Fear part of the Brain and enter the door on the right of the Sacred Cow Of Contemplation. In this room is the way to the levels Poultryguyst and Poulrtyguyst 2. You should see a door blocked by a metal gate. If you have all 1000 marbles and have beaten Earthworm Kim, the gate will open. Walk through it and the game will automatically reset. When you start the game again, Earthworm Jim usually hops around playing the accordion -- this time Kim will be the playing it and will soon be smashed by a cow. Press any button to get to the file select screen. You should now have a fourth file as Earthworm Kim.
Information in this section was contributed by Jay House.

Unlimited lives:
Go outside the entrance to "Hungry Tonight?" Collect the Power Parp Tin from Snott and use it to collect the nearby extra life. Enter "Hungry Tonight?" and immediately exit. Talk to Snott again to get another Power Parp Tin, then collect the extra life again. Repeat this to get as many extra lives as needed.

In Memory, go to Barn To Be Wild. Cross the river of quicksand, then go around the corner to the large bed of quicksand with pigs, rocks, and crates floating in it. Wade over to the first rock, then jump across the green bobbing crates. Go over to the second rock. There should be an entrance on the wall. Move the camera around if you cannot see it. Jump and hover over to it, and wade the rest of the way. Enter, and there will be an extra life for you. Collect it and go back to the entrance/exit of the level. Re-enter it to get more lives. If you have suffered damage and need more health, pause game play and select "Save and go to brain". You will return to brain central with full health and all the lives you have gathered. Only use "Save and go to brain" if you have suffered damage and are almost dead; it will take a lot more time to get the lives you want. Repeat this for awhile and eventually you will have plenty of lives for Psycrow.
Information in this section was contributed by Danny Kriner.

Hint: Defeating Fatty Roswell:
Collect two of the three missiles and wait at the third. He will teleport there and be an easy target.
Information in this section was contributed by JOSEPH SOKOLOWSKI.

Hint: Defeating Psycrow:
Ignore the marbles, collect bullets at all times, and shoot him. Keep his marble level at 0 or close to it at all times. This will allow you to get your marble level up to approximately 85 within a few minutes.
Information in this section was contributed by Mdawg666.

Hint: The Good, the Bad, and the Elderly: Easy Golden Udder:
In the fantasy part of the brain, there is a building shaped like the back of a cow. Inside, you must ride an annoying ice cube around a room. If you fall off, you must start over. However, if you jump onto the ice cube and immediately jump back onto the fridge, then you can just watch the ice cube slide around. Simply jump back onto the ice cube once it returns to the fridge but before it stops moving. You will receive a golden udder without doing any work.
Information in this section was contributed by J2.