
MementoMori has announced a collaboration with past titles by the Bank of Innovation. Learn more about the debut date of the project and updates on it.
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MementoMori's official X (formerly known as Twitter) account announced on January 4, 2024, the much-awaited partnership with Bank of Innovation, Inc.'s well-known video games, Cryptract and Mitrasphere.
Fans of MementoMori and these critically renowned games can expect an intriguing mix of worlds and items when the alliance launches in February 2024.
It is reported that laments are being created for every character involved in the partnership. Additionally, MementoMori posted this announcement in their in-game notification.

Cryptract, also known as Genjuu Keiyaku Cryptract, is a PlayStation 4, PC, Android, and iOS RPG developed by the Bank of Innovation. The official release date was February 17, 2015. It is renowned for its anime-style artwork, strategic gameplay, and fantasy-themed plot.

Mitrasphere is a co-op multiplayer RPG launched by Bank of Innovation on August 7, 2017. It has a captivating plot, diverse characters, real-time combat, and a fantasy-themed setting.

| Latest News | |
|---|---|
| 3rd Anniversary Campaign Events and Guide | 3rd Anniversary Countdown Presents Guide |
| Version 4.2.0 Update | Version 4.3.0 Update |
| Current Events | Duration |
|---|---|
12/9, 12/14 Grand Battles! |
Round 1: December 9 (UTC-7) - December 14 (UTC-7) Round 2: December 23 (UTC-7) - December 28 (UTC-7) |
Into the Cave of Miracle Seekers |
November 28, 2025 4:00 (UTC-7) - December 8, 2025 3:59 (UTC-7) |
| Version 4.2.0 | |
|---|---|
| 4.2.0 | 4.3.0 |
| Version 4.1.0 | |
| 4.1.0 | - |
| Version 4.0.0 | |
| 4.0.2 | 4.0.0 |
| Version 3.0.0 | |
| 3.23.1 | 3.23.0 |
| 3.22.0 | 3.21.2 |
| 3.21.0 | 3.20.0 |
| 3.19.2 | 3.19.0 |
| 3.18.0 | 3.17.0 |
| 3.16.0 | 3.13.0 |
| 3.12.0 | 3.11.0 |
| 3.10.0 | 3.9.0 |
| 3.8.0 | 3.7.0 |
| 3.6.0 | 3.5.0 |
| 3.4.0 | 3.3.0 |
| 3.2.0 | 3.1.0 |
| 3.0.1 | 3.0.0 |
| Version 2.0.0 | |
| 2.23.0 | 2.22.1 |
| 2.21.1 | 2.21.0 |
| 2.20.0 | 2.19.0 |
| 2.18.0 | 2.17.0 |
| 2.16.0 | 2.15.0 |
| 2.14.0 | 2.13.0 |
| 2.12.0 | 2.11.0 |
| 2.10.0 | 2.9.1 |
| 2.9.0 | 2.8.0 |
| 2.7.0 | 2.6.0 |
| 2.5.1 | 2.5.0 |
| 2.4.0 | 2.3.1 |
| 2.3.0 | - |
MementoMori Collaborates With Cryptract and Mitrasphere

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