Clear the signal. Save the shelters. Hold the ground line.
Wave
1/36
Signals
18
Cannons
●●●
Score
0
First Contact is ready. 18 signals detected.
GROUND STATION 33PHOSPHOR DEFENSE CHANNELMOVE · AIM · FIRE
ACTIVE TRANSMISSION
First Contact
3×6 SIGNAL ARRAY
GROUND-STATION DRILL
First Contact
Move the cannonDrag it, hold Left/Right, or use A and D.
Fire through gapsHold Fire, Space, or Enter. Your own shots can erode shelters.
Clear the low rowOnly the lowest alien in a column can shoot. Fewer aliens march faster.
CHANNEL HELDThe formation is frozen and saved.
Phone: drag the cannon and hold Fire. Keyboard: A D or Left/Right move · Space/Enter fires · P pauses. Clear all signals before they cross the dashed ground line.