ASTRA BACKFLOW
LEADERBOARD

A backflow-prevention arcade adventure

BACKFLOW DEFENDER

Clear the line. Stop contamination. Top the patrol board.

SCORE000000
STAGE01 / 05
TIME00:00
PROBES● ● ●

Astra Backflow presents

THE CLEAN WATER
MISSION STARTS HERE

Guide Probe through five pipeline stages, from an easy service line to a challenging backflow assembly. Collect mineral deposits and neutralize backflow hazards.

Cyan bypass pipes connect the left and right edges. Keep moving through to cross the maze. Ghosts can use them too!

Choose joystick or direction buttons below the maze. Dragging on the maze works with either option. Arrow keys / WASD also work.

Drag on the maze or use arrow keys / WASD. On mobile, choose your controls below.

On-screen controls

Drag to steer. Release to center.
Probe keeps moving.

Mineral deposit 10 Repair-kit pellet 50 Neutralized germ 200+

Why it matters

KEEP CLEAN WATER
FLOWING FORWARD.

Backflow preventers protect drinking water by allowing flow in the right direction and stopping contaminants from moving backward. Every hazard in this game represents a real threat.