Steins;Gate (Japanese: シュタインズゲート, Hepburn: Shutainzu Gēto) is a seinen manga series created by Yomi Sarachi based on 5pb. and Nitroplus’s video game of the same name, and is part of the Science Adventure franchise. It was serialized by Media Factory in Monthly Comic Alive from 2009 to 2013, and was later released as three collected volumes; these were published by Udon Entertainment in North America in 2015 and 2016.

Steins;Gate – Rebellion of the Missing Ring (STEINS;GATE 亡環のリベリオン Boukan no Riberion?) is a spin-off manga of the Steins;Gate visual novel focusing on Amane Suzuha’s experiences of the 0.000000, 0.337187, and 0.409431% World Lines. It introduces new antagonists such as Kayano and reveals new information about the Valkyrie resistance and SERN in the Alpha Attractor Field.

The story follows Rintaro Okabe, who together with his friends use a microwave oven and a cell phone to send text messages back in time, altering the present. The series performed well commercially and became one of Udon Entertainment’s best selling manga, while critics were divided in their opinions on it, some enjoying it, and some mostly calling it a complement to the original work.