Wallbarrow

Wallbarrow is a maze-building tower defence on open chalk downs. Enemies walk from the gate to your keep along the shortest path, recomputed every time you build. Lay cheap stone walls to stretch that path, then raise walls into arrow, frost or cannon towers and level them up twice. A wall that would cut the path completely is refused. Each of the three maps has 20 waves of grunts, runners, armoured shields, brutes and two bosses; kills and held waves pay gold, and the keep has 20 lives. Call waves early for bonus gold and play at triple speed. It plays in the browser with a keyboard, mouse or touch.