Akiperago

Build diagonal archipelagos from islands with sizes 1, 2, 3 and so on.
Controls
Shaded cells form islands. Islands never touch along an edge; they connect only at corners. A number gives the size of its island. Each diagonal archipelago must contain islands of every size from 1 up to its island count. Tap a cell to cycle black, white and empty.
Brain training · PuzGo