Quick answer
Yes. Natsume says Teradea contains rare collectibles, treasures, ore, gems, and animals that reward exploration.
Confirmed details
- Rare collectibles are part of open-world exploration.
- Remote islands and caves contain distinct discoveries.
- Power Wisps add another collectible-style progression path.
What this means for players
Collectible categories, totals, locations, rewards, and completion tracking are not yet announced.
This answer is intentionally limited to the current game’s published information. It does not import values, characters, schedules, or mechanics from earlier Harvest Moon titles.
Official source
Natsume first-trailer announcement — June 18, 2026. Independently summarized and checked on 2026-07-19.