What is a gunter?
The word "gunter" is a fusion of the words "egg" and "hunter." In Wade's world, gunters are people who spend much of their time in the OASIS virtual reality world looking for James Halliday's Easter egg. A computer-generated Easter egg is defined as a secret object, message, or clue hidden inside a program by its creator. Halliday designed his egg hunt to mimic the first video game Easter egg, created by the real-life Warren Robinett. When Robinett coded Adventure, he hid a message identifying himself as the game's creator in the Black Castle. In the story, Wade Watts/Parzival is the gunter who finds Halliday's egg.