Pocohontos

Debug Menu
Game Genie codes enable a debug menu after reset. Up and Down move the cursor, while Left and Right change the value. B and A increase and decrease the value by 10, respectively.

Of note is that right before the menu opens, there is a small copyright message saying "FC SYSTEM (C) COPYRIGHT". For a brief period of time, a string saying "LIBARY READY" (a typo of "LIBRARY READY") will blink on the screen for a couple of seconds before being sent to the debug menu. There's also "EI-HOW YANG", but it's colored the same as the background.

Functionally, it's almost identical to Toy Story and Super Donkey Kong, which were also done by Ei-How Yang.

Stage Select
Press A + B + Select + Start before the title screen shows up. Use Up / Down to select a stage, and press Start to begin.