Everything the world has lost drifts to one place in the end. One day the tide also brought a small pig. Dudu wakes up on a tiny island and takes over a crooked lost-and-found office from an old hermit crab who lives in a teacup. Every day the tide brings new things: one striped sock, a postcard never sent, an umbrella you only remember on sunny days. Mend them at the workbench and give them back. On your first day you will meet a shy lamb looking for her sock, stitch it up, and throw your own bottle into the sea. Each of the 12 neighbors came here looking for something lost, and stayed. They walk around, chat with each other, have favorite things, and tell you a little more of their story as you become friends. Every day a passing animal also arrives who cannot say what they lost, only describe it; work out what it is, and return it. The island runs on real time, with four seasons, weather, day and night. Fish, bugs and crops change with the season and the hour. Fish 40 kinds, catch 30 kinds of bugs, shake and chop trees, plant trees and crossbreed flowers, grow vegetables, dig up buried things, craft furniture and upgrade your tools. Decorate your house, place things anywhere outdoors, and even move houses around. Fill the museum, pay off what you owe the old crab to expand your home, gamble on the sea glass market, and take part in 12 festivals. Rebuild the bridge, the road and the old lighthouse, and on the thirtieth day the bottle you threw on your first day comes back. There is no energy bar and no ads, and nothing is lost if you stay away for a while. For the first week you can sleep to go straight to the next day; after that a new tide arrives at 4 a.m. local time. Use the joystick to walk and the button to act. Progress is saved on your phone. Dudu is the hand-drawn character from the Y Build app, and Dudu's moves were made by an AI video model from those drawings. The island, neighbors, items and furniture were drawn by AI, the music and most sound effects are AI-generated, and some sound effects are from Kenney (CC0).