Harvest Days invites players to build and manage a vibrant farm in an open-world setting. Players grow crops, raise livestock, and complete a variety of activities such as crafting, fishing, and exploring the countryside. The game emphasizes a relaxed, life-simulation experience with a focus on community and environmental stewardship. It offers a single-player campaign with optional multiplayer co-op, and the base game includes all core farming mechanics without additional DLC at launch.