Beacon Grid
A beacon hides somewhere on the coordinate plane — fire at lattice points and let each compass arrow guide you in until you land dead on it.
How to play
Click a lattice point on the four-quadrant grid to take a shot. The only reply is an eight-way compass arrow pointing toward the hidden beacon — North means higher y, East means higher x — with the distance kept secret. Reason from the directions to triangulate the exact point, then move on to the next beacon in the run. Fewer total shots scores higher.
- Each shot returns only a compass direction, never how far.
- Combine the signs of several arrows to box in the beacon's coordinates.
- Land exactly on the point to mark it FOUND and reveal the next target.
- Clear all the beacons in the run to finish.
Game modes
- Daily: the same beacon chain for everyone, in Easy, Medium, or Hard.
- Practice: fresh random chains at your chosen difficulty.
Controls
- Desktop: click a lattice point on the grid to fire a shot.
- Phone & tablet: tap a lattice point to fire — the arrow and readout show the direction.
Tips & strategy
- Open near the centre so the first arrow rules out a whole quadrant.
- Use a vertical and a horizontal probe to fix the x and y bands separately, like binary search.
- When an arrow points straight N, S, E or W, the beacon shares that exact row or column.
What you'll learn
Beacon Grid makes the coordinate plane click into place — every shot forces you to read direction from the x- and y-axes and reason across all four quadrants to pin the hidden point.
- Skills: coordinate plane and quadrants, x/y direction, triangulation, binary-search reasoning
- Best for: roughly grades 5–9 (ages 10–14)
- For parents & teachers: turns plotting points and reading direction into a puzzle, reinforcing graphing without rote drilling.
About Beacon Grid
Beacon Grid is an original, free browser puzzle that turns coordinate-plane reading and triangulation into a guessing game of directions. No download or account needed.
A free, original browser game on PlayPendium — no download, no install. Browse all games →
