| 2022.05.11 | Letters from the Producer 17: Steam Release! |
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| 2020.12.10 | Letters from the Producer 16: The PS4 Version Launches Today! |
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| 2020.12.03 | Letters from the Producer 15: Switch Update "Titans and the Iron Front" Now Available! |
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| 2020.11.12 | Letters from the Producer 14 :The PS4 Version Has Gone Gold and Game Update News |
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| 2020.09.24 | Letters from the Producer 13: PS4 Release & Future Brigandine Developments |
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| 2020.08.06 | Letters from the Producer 12: Regarding Future Updates |
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| 2020.06.25 | Letters from the Producer 11: Game Launch |
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| 2020.06.12 | Letters from the Producer 10: Demo Feedback |
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| 2020.05.29 | Letters from the Producer 9: Monster Design (Part 2) |
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| 2020.05.15 | Letters from the Producer 8: Monster Design (Part 1) |
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| 2020.04.30 | Letters from the Producer 7: Demo Release |
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| 2020.04.22 | Letters from the Producer 6: Nation-Based Strategic Difficulty (Part 2) |
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| 2020.04.17 | Letters from the Producer 5: Nation-Based Strategic Difficulty (Part 1) |
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| 2020.04.01 | 4: Records of History and Options Settings |
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| 2020.03.19 | 3: Alternate Chapter (Challenge Mode) |
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| 2020.03.13 | 2: Details about difficulty levels |
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| 2020.03.11 | 1: An introduction to the letters, the main game mode and difficulty levels |
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