The debut trailer for Cyberpunk 2077 acme at the end of Microsoft’s E3 2018 press converence, and developer CD Projekt Red snuck in a full FAQ for their upcoming game, a possible alternate reality game, along with a bunch of download codes for The Witcher 3. The hidden FAQ could be read by combining messages hidden in two frames near the end of the video.
A transcription of the text is as follows:
Source: IGN.com E3 2018: Cyberpunk 2077 Trailer Message Reveals Indefinite Release Date, Free DLC, No DRM