STEINS;GATE×Sanrio Characters: Chance Encounter of the Goldig Party is a 4-part online visual novel released on April 23, 2020.

It is part of a collaboration between Steins;Gate and Sanrio Characters, and has the lab members meet Hello Kitty in the bizarre 0.549111α world line. This Sanrio Characters collaboration is the 6th of 10 projects to celebrate the 10th anniversary of Steins;Gate.