Re:Zero Lost in Memories (Re:ゼロから始まる異世界生活（仮称）) is a game that is produced by SEGA and it is the first official mobile game in the series. The game is a free-to-play game with microtransactions. The game is set to release in 2020.
The game features a story that is a retelling of the anime, however, it also features branching paths that lead Subaru Natsuki to a different outcome of the story, turning into a "What IF" scenario. In addition, the game includes a new original story that was not included in the anime and the project will be supervised by the series's author Tappei Nagatsuki. It also features the original voice actors Kobayashi Yuusuke, Takahashi Rie, Minase Inori, Murakawa Rie, Uchiyama Yumi, and more, reprising their roles from the Re:Zero anime and animation will be animated by White Fox.
The game is a time-based action RPG. You can select up to a party of five. Each of them will have three attacks and each of them will have cooldown depending which attacks you choose.
The game also features branching paths that deviate the story. The options you choose leads the player to a different outcome of the story, turning it into a "What IF" scenario. The game will show the different bonds with Subaru and the other characters had he made different choices or met under certain circumstances.
- Natsuki Subaru
- Reinhard van Astrea
- Julius Juukulius
- Wilhelm van Astrea
- Elsa Granhiert
- This game will include the Re:Zero IF and it is the first game in the series to have the IF stories included with the main story.