Steins;Gate: Divergencies Assort

Steins;Gate: Divergencies Assort is a visual novel compilation of the side stories to the main Steins;Gate story. It consists of Steins;Gate 0, Darling of Loving Vows, and Linear Bounded Phenogram. The title released in March 2019 in Japan.

Plot
The games take place on alternate worldlines that have little to do with the original's plot. Steins;Gate 0 is the only one that is relevant, taking place in an alternate timeline of the true ending where Okabe abandons his crazy scientist motif and time travel.

Darling of Loving Vows is an alternate take on the original plotline except it is romantic comedy with no SERN or Rounders. Instead, Okabe is dealing with how to pay for the laboratory and has to take parttime jobs. The plot is about Okabe getting into romantic relationships with the other characters of Steins;Gate.

Linear Bounded Phenogram is collection of side stories mostly focusing on each of the characters in different worldlines. Almost all of these are not canon.