Quick answer
No official platform-specific file size is published in Natsume’s three announcements or current physical product details.
Evidence checked
- Five platform families are confirmed.
- The press releases do not list gigabytes or storage requirements.
- Physical media availability does not reveal download or patch size.
How to use this answer
Storage guides should wait for first-party platform metadata instead of copying a guessed size across systems.
The answer is scoped to Harvest Moon: Echoes of Teradea and the public evidence available on 2026-07-29. It does not import schedules, values, controls, item data, or progression rules from an earlier Harvest Moon game.
What remains outside the evidence
Switch, Switch 2, PS5, Xbox, and Steam may show different sizes, and launch updates can change them.
If Natsume, a verified platform storefront, or reproducible launch-day testing supplies the missing field, this page should be updated with the exact source and review date rather than silently replacing the earlier status.
Evidence source
Primary source: Natsume official news index. Independently summarized and checked on 2026-07-29.