In this behind-the-scenes story, Eran Egozy, co-founder of Harmonix Music Systems and co-creator of Guitar Hero, shares what it was like the first time he picked up the plastic guitar and played an early prototype of the game.

At the time, the software was rough, the gameplay barely functional, and the idea of selling a bulky plastic guitar seemed risky — even ridiculous. Would anyone pay for it? Would it even be fun? Egozy and his team didn’t know for sure. But what they did know was that something about it felt special. What started as a longshot idea evolved into one of the most iconic and best-selling video game franchises of the 2000s — changing the way people interact with music and video games forever.