Many people know Onet Connect as the quiet cousin of mahjong: identical tiles, a short path between them, and a board that slowly empties. Onet Gallery 3D keeps those rules but puts the whole board into a relaxing three-dimensional view.
You connect two matching tiles with a line that has at most two turns and does not cross other tiles, and the pair disappears. It sounds easy, but the connections are not always as straightforward as they look, and a careless pair can block a path you needed later. Start with the tiles on the outside of the board to open up new routes.
The game comes from the Famobi studio and unlocks new levels as you progress, with the difficulty rising from stage to stage. Mahjong Connect 5 and Mahjong Classic are its cousins in the catalog.