ASTRA BACKFLOW
LEADERBOARD

A backflow-prevention arcade adventure

BACKFLOW DEFENDER

Deliver tools. Repair the pipeline. Restore service.

SCORE000000
STAGE01 / 15
TIME00:00
PROBES● ● ●

Astra Backflow presents

THE CLEAN WATER
MISSION STARTS HERE

Repair & Restore: collect a kit from the gold tool depot, then deliver it to a numbered orange station. Repairs happen automatically on arrival.

Carry one kit at a time. Return to the depot for each repair, then reach the green OUT outlet. There are 15 stages, with repairs increasing from one in stage 1 to six in stages 13–15.

Water droplets are optional bonus points. Kits cannot defeat contamination blobs—avoid them. Repairs and carried kits survive a collision.

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

Enter your details once before your first patrol.

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.

Optional droplet 10 Delivered repair 300 Restore service 500 × stage

Why it matters

KEEP CLEAN WATER
FLOWING FORWARD.

Backflow prevention helps protect drinking water. Siphon Swirl, Pressure Clump, Cross-Connect Tangle, and Corrosion Crust are fictional mascots for plumbing hazards, not specific bacteria or viruses.