NN666Echo

NN666Echo is a quiet spatial planning puzzle built for short, thoughtful sessions. Each level places you on a compact grid with a starting point, a finish, numbered beacons, and echo squares. Move one square at a time, collect every beacon, and reach the finish before your steps run out. Echo squares make every route matter. When you leave one, its direction previews a temporary closure on the next ordinary square. Read the arrow, preserve a way back, and choose an order that keeps the board open. Your numbered trail makes the whole plan easy to review. The first chapters introduce the rhythm with a clear 4 x 4 field, two beacons, and a small step limit. Replay a chapter to find a cleaner route, use the three-step undo history to recover from a detour, or restart when a plan needs a fresh beginning. The game works offline and keeps chapter progress on your device. There are no accounts, online comparisons, or required network features. It is made for a commute, a quiet break, or one last route before sleep.