Drop Duchy: Grid Adjacency and Fort Defense Guide

To maintain your board state in Drop Duchy, cluster compatible structures directly next to each other to trigger passive adjacency bonuses, and contain encroaching enemy forts by building walls in adjacent columns until you can clear them.

Building Adjacency Strategies

Randomly placing buildings to fill empty slots dilutes your defenses and scatters resources. Placing compatible structures—such as housing or production buildings—side-by-side in dense blocks activates passive adjacency synergies without using extra space on your board.

• Concentrated Defenses: A compact building cluster lets your defensive tiles protect multiple structures simultaneously, leaving fewer vulnerable lanes.
• Preventing Split Fronts: Spreading buildings across separate parts of the board forces you to split defensive units across disjointed columns, increasing the likelihood that enemy pressure reaches the bottom of your grid.

Containing Enemy Forts and Managing Lanes

Enemy forts act as active blockers that disable grid spaces, restricting where you can place new tiles and threatening to shrink your playable area if left unmanaged.

1. Isolate Forts: When you cannot destroy an enemy fort immediately, build walls or defensive structures in the adjacent columns to box it in. This prevents the threat from spreading into neighboring lanes.
2. Use Target Lane Defense: Position soldiers or defensive fortifications directly in the lanes where enemy forts push. Stalling individual lanes is generally safer than constantly waiting for full row clears, which can cause resource starvation if overused.
3. Deploy Clear Utilities: Use specialized units or grid-clearing structures to clear occupied fort tiles and reclaim playable space before board saturation forces poor placement decisions.

Drafting Priorities by Run Phase

Tailor your draft choices to the current density and threat level of your board rather than taking high base values in every round.

• Early Game: Focus on drafting building clusters to set up resource generation and establish efficient placement patterns.
• Mid Game: Shift toward drafting defensive units that can hold specific lanes against pushing forts.
• Late Game: Prioritize board-clearing utility tiles to remove stubborn obstacles and open up space for your target layout.

When your board becomes nearly full, stop drafting purely for points or production. Shift to defensive thinning by choosing space-clearing tiles, which preserves your existing layout and prevents board exhaustion.