“Linearity” is the title of the teaser trailer for the opening of Parallel. This trailer was released on YouTube channel DiamondbackPlays and posted to #announcements on INSERT FULL DATE March 30, 2020, two days before the official opening of Parallel on April 1, 2020.
The trailer consists of server owner Diamondback88 narrating about the concept of Linearity, followed by a brief cutscene of him watching the formation of a Rough Planar Rift. The trailer concludes with the logo of Parallel.