Quick answer
Yes. Every official platform list reviewed names PC via Steam; no other PC storefront has been announced.
Evidence checked
- Steam appears in the March platform reveal.
- Steam shares the September 24 release date.
- The press releases do not name Epic Games Store, GOG or Microsoft Store for PC.
What this does—and does not—confirm
This records the current announced storefront and does not claim other PC versions are permanently ruled out.
This answer covers Harvest Moon: Echoes of Teradea only. It does not copy schedules, gifts, values, controls or mechanics from earlier Harvest Moon games.
Evidence source
Official publisher announcement: Natsume title announcement — March 11, 2026. Independently summarized and checked on 2026-07-26.