Polygon's Nicole Clark reviews the Steam demo for Sandcastle, an upcoming sandbox game from Bubblebird Studio (developer of Haven Park) that invites players to build and decorate sandcastles on a beach. The reviewer likens it to Tiny Glade for its relaxing, low-pressure design, and describes it as an effective piece of escapism from real-world stress, praising its soothing sound design and open-ended, non-punishing structure.

The demo places players in a single diorama-style beach setting with sand, water and basic tools such as buckets, shovels and rakes, letting them freely sculpt sand or pursue optional light objectives like collecting sticks. Exploring the ocean reveals litter that can be collected for decorations, while bottles contain "messages" unlocking new tools such as bridge-building and terrain-shaping items. The full game will add multiple sand types and beach layouts, though no release date has been announced; the Steam demo, unlike in-game sandcastles that erode over time, remains permanently available to play.