If you are looking to "develop" this as a feature or content piece, 1. The Core Concept

If you're a developer or content creator looking to build a feature around this, consider these approaches:

Create a UI element that visually "locks" or changes color only if the user stays on the screen for the duration of the audio.

Use high-contrast text: "Solo el 1% llega al final" (Only 1% make it to the end).

A sudden change in audio—either a loud joke, a jump scare (use with caution!), or a secret code for a giveaway. 3. Technical Logic (Pseudo-code)