Cozy Island takes place in a world full of surprises, where players explore and build. The main activity is exploring the open-world island to gather resources and build a personal base. Players can wander around without a specific direction, discovering various locations at their own pace. Toys and furniture are scattered throughout the landscape, serving as the basic materials for decorating a designated secret area. The island is also home to various animals, which can be found and brought into your home.