This is a summary of the development diary for Nanasaba 1st Season (Japanese).
Daily
- Day 1 of the Nanasaba 1st Season Development Diary: Server concept & River-drawing Part 1
- Day 2 of the Nanasaba 1st Season Development Diary: River-drawing Part 2 & City Placement
- Day 3 of the Nanasaba 1st Season Development Diary: River-drawing Part 3 & Map Introduction
- Day 4 of the Nanasaba 1st Season Development Diary: Opening of rail and ship lines around Masaba Prefecture
- Day 5 of the Nanasaba 1st Season Development Diary: Makasa Main Line
- Day 6 of the Nanasaba 1st Season Development Diary: Ryugu Main Line
- Day 7 of the Nanasaba 1st Season Development Diary: Introduction of Masaba City
- Day 8 of the Nanasaba 1st Season Development Diary: Minahasa Peninsula & North Main Line
- Day 9 of the Nanasaba 1st Season Development Diary: Introduction of the Southwest Region & Makasa City
- Day 10 of the Nanasaba 1st Season Development Diary: Minahasa Main Line
- Day 11 of the Nanasaba 1st Season Development Diary: Current Nana-Iro Country & Houin Main Line Part 1
- Day 12 of the Nanasaba 1st Season Development Diary: Postal network
- Day 13 of the Nanasaba 1st Season Development Diary: Houin Main Line Part 2
- Day 14 of the Nanasaba 1st Season Development Diary: Houin Main Line Part 3
- Day 15 of the Nanasaba 1st Season Development Diary: Mail handling volume ranking
- Day 16 of the Nanasaba 1st Season Development Diary: Nishiden Main Line
- Day 17 of the Nanasaba 1st Season Development Diary: Teito Rapid Transit Authority Suzaku Avenue Line
- Day 18 of the Nanasaba 1st Season Development Diary: Teito Rapid Transit Authority Byakko Avenue Line & Tando Nishizumi Line
Weekly
Due to being busy, updates will be weekly.
- Week 4 of the Nanasaba 1st Season Development Diary: Makasa Railway