to the official break chance memento website
This site contains all the relevant information about Break Chance Memento, an upcoming visual novel by Cyanide Tea. It's a modern science fiction story with a healthy serving of BL and forbidden love on the side, but the emphasis is on one family's attempt to right the wrongs of their past--and future. As the player, you get to control one of two main characters: Shuuki or Natsume Amamiya, each with a totally different perspective on the story.
Find the items you need in order to travel through time successfully and save your loved ones from a mysterious serial killer!
Gameplay involves typical visual novel fare such as making decisions at different points in the plot, but also will includes things like finding items to basically use as portals to time travel with, and other things that would totally spoil Natsume's story if we told you about.
A new demo containing the first two chapters of the game was released on July 21, 2013 and can be found here. A prequel/demo to the game was released on October 31, 2011 and can be found here. We expect to release the full game around sometime in 2013, hopefully by Q3 or Q4. The full game will be available for purchase online.