Defend ten waves of mechanical creatures and defeat the Abyssal Colossus. If beacon health reaches zero, the watch is lost.
01 / BUILDPut firepower along their route.
Choose a defense, then select a circular pad. Hover to preview range. Select an existing structure to upgrade or sell it. Towers have three levels. Selling refunds 70% of parts spent; the free starter tower has no base refund.
02 / POWERKeep the whole defense connected.
Power comes from the beacon. Structures connect within 3 tiles, or 4.8 tiles through a relay. If capacity runs out, later-built structures go offline. Expand the grid for 6 more capacity. Selling a relay may disconnect downstream structures.
03 / DEFENDDifferent enemies need different answers.
Sentinels deliver steady fire, Mortars hit groups, and Frost slows enemies. Between waves you receive parts, 1 grid capacity, and 5 health repair. You decide when to begin the next wave.
04 / OVERDRIVECall on the beacon when it matters.
During battle, Overdrive increases powered towers’ fire rate by 80% for 6 seconds, with a 35-second cooldown. Timers follow game speed and stop while paused.