Lottu

A calm logic puzzle on a night-blue sea chart. Each sandy island carries a number, and that number is how many bridges must leave its shore. North isle Tap an island, then a neighbour, or swipe between them; each touch cycles the span from none to one to two. Bridges run straight, never cross and never pass through land, and every island must end up in one connected network. An island turns teal when its count is met and coral if it carries too many. East isle The Voyage spans five seas of eight charts: Shallows on a 7 × 7 grid, then Reef, Strait, Archipelago and finally Open Ocean at 11 × 11. Each chart has exactly one solution. Three stars mean no hints, two allow up to two, and your quickest time is kept. Further seas open after 5, 11, 18 and 26 cleared charts. South isle Tide Trial gives you five minutes and a steady stream of fresh 7 × 7 charts; a hint there costs fifteen seconds. Elsewhere, Undo and Clear are always at hand, and Hint removes a wrong span or places a missing one. West isle Cleared charts unlock eight chapters of the Captain's Log, a short story told from the deck. The Log page shows charts, stars, bridges built, hints, your trial record and hours at sea, plus your recent trial runs. A ten-question quiz on islands and famous bridges draws from 24 facts and explains each answer. Depth contours drift and buoy lights blink behind the chart; this animated background can be switched off in Settings, together with haptics. The game plays offline and needs no account.