Steam Community :: Guide :: Easter Egg room in Atari Vault's Adventure -- as mentioned in "Ready Player One" [SPOILERS]
RUMBLE ROYALE - Created by Warren Robinett for the Atari 2600, the fantasy game Adventure had a hidden message inside it and was credited to be the first widely known "Video Game
![Warren Robinett talks Adventure in GDC 2015 Classic Game Postmortem | News | GDC | Game Developers Conference Warren Robinett talks Adventure in GDC 2015 Classic Game Postmortem | News | GDC | Game Developers Conference](https://gdconf.com/sites/default/files/adventureatari_0.jpg)