Enlarge / Eleven and the gang face down weird dangers yet again in the third season trailer.YouTube/Netflix

If you were one of the many people confused and curious about Microsofts apparent time-traveling social media blitz last week, wonder no more. As several astute fans guessed, the retro throwback was part of a collaboration with Netflix in support of Stranger Things, which just released its third season. The show is set in the year 1985, the same year that Microsoft released Windows 1.0.

The partnership has three elements. The first follows up on the many tweets from Microsofts social media crew that the original iteration of the Windows software would be launching. Microsoft has launched a PC app called Windows 1.11, which uses some of the original programs to give a rough overview of some of the new seasons plot points. Uncover clues in Paint, play an ASCII dungeon crawler, and watch clips from the show very roughly as they might have looked on a computer of that era.