Cave Story Cheats on Wii

Early Jet Pack

The Machine Gun can be used as a "jet pack" when its at Level 3. Just jump and aim it downward to float up until your ammo runs out.

Alternate Endings

Perform the actions below to unlock different endings.

"Normal" ending - Complete the escape sequence after the final boss without going through the Sacred Grounds.
"Bad" ending - Leave with Kazuma in the Egg Corridor.
"Good" ending - Complete the Sacred Grounds area.

Alternate Credit Portraits and Dialog

After making the rocket that leads you to the last cave, do NOT talk to Momorin to get your booster back. Instead just take the rocket and keep your Mimiga Mask. There will be some dialog change after this point and some of the portraits displayed during the credits will be altered as well.

Curly's Underwear

If you grabbed the Map item on your way through the Mimiga Village, you can use it in the back room after fighting Curly in the Sand Zone. Doing so will reveal a secret passage. If you use the map to navigate to the end and onto the ledge on the left, you can use the "Look" button to pick up Curly's Underwear. They serve no purpose.

Chaco's Lipstick

After you've talked with Chaco about the Jellyfish Juice, rest in her bed. You'll wake up with Chaco in it and her lipstick in your inventory.