
In Undertale fan circles, is a joking/misheard phrase from Mettaton's quiz show (the "Button" segment). The actual line is something like: "Correct! Prepare for..." but fans often mishear it as "Quack prep!" — especially since Mettaton's EX form has a duck-themed transformation (legs → duck feet).
While browser versions are convenient for quick sessions, reviewers note that the official versions found on Steam provide superior music quality and more precise controls, which are vital for the game's bullet-hell combat. What is Undertale? quack prep undertale
feature tutorials and "how-to" guides specifically demonstrating how to run Undertale via Quack Prep. Important Considerations Unofficial Status: In Undertale fan circles, is a joking/misheard phrase