Whenever Maxwell dies from electrocution while wearing an item that changes his vision, the music will change into a simple retro midi theme upon continuihng. This can be done with the XRay Goggles, XRay Glasses, Nightvision Goggles, Thermal Goggles, or Polarized Sunglasses.
Activate the following game modes by performing the corresponding tasks. To revert back to normal, play the mode you activated a second time. Note: These may only work on the Wii U version of the game:
HOW TO UNLOCK
Gameboy Color Mode
Type in ARCADE MACHINE to get an arcade that can be played.
Type in VIDEO GAME to get a gameboy.
Old Timey Mode
Type in TIME MACHINE, and use it to make everything sepia tone, and have a piano bgm.